CRISTINA VERESAN
SCIENCE EDUCATOR
  • Home
  • Teaching Philosophy
  • Resume
  • In the News
  • Blog
  • Contact

STOKED ON MARINE SCIENCE!

4/9/2017

48 Comments

 
Departing for Coconut Island
What is it like to spend 24 hours on a private island in beautiful Kāneʻohe Bay conducting scientific field work? A group of my 7th grade students from Le Jardin Academy just found out. I had the privilege of bringing 15 students, all stoked on marine science, to the Hawai'i Institute of Oceanography (HIMB) on Moku o Loʻe (Coconut Island) for an overnight trip. Scientists from all over the world come to HIMB to access the marine environments and utilize their world-class laboratory facilities. Saturday afternoon, our group took the quick shuttle boat rides over to the island to begin our own marine science adventure. 
Picture
The small shuttle boat to the island had to make a few trips
Setting Up Camp
Our guide Leon from the HIMB Community Education Program welcomed us to the island and, after a safety briefing, everyone got to work pitching tents and organizing our gear. We had a long day (and night) of science ahead of us, so we had to get camp set up. We were all happy to be on the island and were impressed with the view from our campsite!
Picture
Setting up camp
Picture
Pitching the tents
Picture
Happy campers!
Touring the Hawai'i Institute of Marine Biology
Next, Leon gave our group a comprehensive tour of Coconut Island and the public areas of HIMB, sharing information not only about their current oceanographic research projects but also about the fascinating history of the 28-acre island. Students were impressed to learn how the island has evolved over time. Some of the island's uses include: an outpost for native Hawaiian fishermen; a lavish private estate complete with exotic zoo; and a world-renowned research institution operated by the University of Hawai'i.

​You can read a detailed history of the island here.
Picture
Leon addresses the group at the "beach house"-- our home base for meals
Picture
Who doesn't love a touch tank?
Picture
Rice coral and mushroom corals on display
Students observed many different tanks in HIMB's labs, but I think they enjoyed the touch tank most of all because they got to get up close and personal with many of Kāneʻohe Bay's invertebrate animals such as feather-duster worms, conspicuous sea cumbers, tiger cowries, hermit crabs, and more. Later that day, students would get a chance to see many of these creatures in their natural habitat while snorkeling in the bay.
Picture
Sea cucumber
Picture
Leon explains the "Super Sucker" barge that helps remove invasive Gorilla ogo algae from Kāneʻohe Bay
Not surprisingly, some of the most popular destinations on the tour were the shark labs. In two different pens, we observed blacktip reef sharks and hammerhead sharks getting fed. We also visited a large enclosure and watched scalloped hammerhead sharks and sandbar sharks cruise below. Students learned about HIMB's current shark research projects involving shark-human interactions, spawning migrations and foraging strategies of top predators, and digestive physiology and navigational abilities of sharks. Students gained a new appreciation for our local sharks; in fact, Kāneʻohe Bay is an important breeding ground for the hammerheads. 

You can read an overview of the research conducted at HIMB's labs here.
Picture
Blacktip reef shark
Picture
Scalloped hammerhead shark
Setting Up Our Coral Larval Experiment
Next, we joined graduate student Raphael Ritson-Williams of HIMB's Gates Lab. In his graduate work, he is studying how corals respond to local and global stressors, including climate change, and he told students about the recent coral bleaching events in Kāneʻohe Bay. Raphael also explained his work in larval ecology, and he gave us the unique opportunity to participate in an actual coral larval experiment that was set-up in the lab's outdoor seawater system. 
Picture
Raphael introduces students to the Gates Lab
Raphael had collected lace coral (P. damicornis) from the bay and put them in the seawater system. Because of our trip's timing (two days before the full moon), Raphael explained that these brooding corals will likely be releasing their larvae (babies). We helped him set up the collectors that will trap any larvae released overnight. Raphael will use any larvae that are released to test for settlement preference in the next generation of corals. Here's hoping we see some babies in the morning!
Picture
Lace coral (P. damicornis)
Getting in the Water...
Now it was time to get in the water and explore the bay! Raphael and I explained how scientists quantify habitat and biodiversity in different environments, including coral reefs, by conducting a transect survey. Students grabbed their transect lines and quadrats and used these real scientific tools to survey an area of coral reef next to the island.
Picture
Ready for the reef transect survey!
Picture
Working together to conduct the survey
Picture
Collecting data
Picture
Quadrat down
Picture
"Upside-down" jellyfish
Students worked in teams of five to conduct their reef transects, and they traded off roles of snorkeling along the transect line, dropping the quadrat, observing what was under the  point intercepts of the quadrat, and recording the data. One group noticed a Cassiopea ("upside-down") Jellyfish and narrowly avoided a sting. Students observed coral reefs and some of the diverse life they support. And I think we were all happy to get wet!
Picture
Manini swim among the coral heads
Picture
Is it possible this group's having too much fun? #photobomb
Conducting a Night Plankton Lab
Picture
Campsite at dusk
Picture
Getting ready for dinner
Once we got cleaned up, the sun began to set and it was time for dinner. We had to fuel up before our night plankton lab. We were not done science-ing yet!
Picture
Engineering the plankton traps
Picture
Attaching the LED lights
In the classroom, students engineered simple plankton traps using 2-liter soda bottles and duct tape. Traps were also outfitted with an LED light. Students made predictions about whether the red or blue LED lights would attract the most plankton. Next, it was time to deploy our traps. Under a nearly-full moon, we took a silent walk and listened to the sounds of the island. When we got to the floating dock, every partner group laid down in a line and each held their traps under the water for ten minutes to collect plankton. A startling moment was when a sea turtle cruised right underneath the traps! 
Picture
Red light
Picture
Blue light
We found that blue LED lights attracted more plankton than the red...Do you know why?
Picture
Sketching the plankton
Picture
Crab larva (zoea)
Once we got back in the classroom, students used microscopes to look for the animal plankton (zooplankton) collected in their traps. Both holoplankton (organisms that are plankton their whole lives), and meroplankton (larval forms of organisms) were found and identified using a field guide.  Then, students completed sketches of the intricate forms. A favorite was the fast-moving "spike head" crab zoea, but we also saw fish larvae, copepods, mysid shrimp, euphasids, sea jellies, and more. Everyone was amazed at the diversity of the plankton.  
Rising and Shining
Picture
Sunrise from Coconut Island
Picture
Time to wake up...
Picture
Yes, it's morning already!
The sun rose and so did our group this Sunday morning. We only had four hours left on the island and we wanted to make the most of it. After packing up camp and eating breakfast, we were ready for action.
Counting Coral Larvae 
We have babies! I am happy to report that many of the corals in the experiment released larvae overnight. Students worked together to count hundreds of coral babies and then shared these data with Raphael. We all appreciated observing the tiny planktonic coral larvae, a life stage of the animal not usually seen.
Picture
I see larvae!
Picture
Can YOU spot the baby coral?
Picture
Hands-on, authentic science
Picture
Gathering and counting hundreds of coral babies
Giving Back
Mangroves are not native to Hawai'i, but they were introduced here over one hundred years ago and have become invasive. The thick masses of established mangroves here on Coconut Island continue to change the shoreline habitat and water chemistry. Before we left, we wanted to mālama the island and give back. Service learning is a big part of Le Jardin Academy's program and my students loved pitching in to remove invasive mangroves and their propagules. Working together, we cleared a large area adjacent to our campsite. 
Picture
That's service with a smile
Picture
Invasive plant removal
Picture
#mudnation
Giving Thanks
A big mahalo to the 15 7th graders on this marine science enrichment trip. I appreciated your enthusiasm and cooperation during our time together on Coconut Island. Your insightful questions, passion for field work, and clever humor made the trip a success! I hope this experience has inspired you to care for our ocean and possibly pursue a career in marine science.
Picture
One last group photo...this time I joined in! #squadgoals
And a big mahalo to each of the following people:
  • Mark Heckman, HIMB Community Education Program Director, for accommodating our unique program and providing logistical assistance. 
  • Leon Weaver, HIMB Community Education Program Staff Member, for guiding us through the entire trip and taking such good care of us. 
  • Raphael Ritson-Williams, Graduate Student in HIMB's Gates Lab, for sharing your expertise and volunteering your time to facilitate two authentic scientific investigations. 
  • Luke Thompson and Amanda Lei Perron, Le Jardin Academy faculty, for joining the trip as chaperones and volunteering your time to benefit our students.
  • Julie Do, Le Jardin Academy Middle School Principal, for supporting this trip and helping to make it possible.
Picture
Time to head home...
Picture
My awesome students and I say a hui hou to Moku o Loʻe! #boatselfie #becausemarinescience
48 Comments

ILLUSTRATED GRAPHS ENLIVEN SCIENTIFIC DATA!

11/2/2016

1 Comment

 
Lesson Recommendation
I am always on the lookout for science lessons that incorporate art in a novel way. Recently, I found a Science Friday lesson that encourages students to create original artwork that uses the line from an actual scientific graph. My seventh graders loved this activity! Each student selected and analyzed a graph related to an environmental issue they cared about. Many chose global climate change, while others focused on overfishing, endangered animals, deforestation, and others. Students were challenged to reflect on the causes or implications of their issue and to illustrate them in their artwork. 

To accompany their illustrated graphs, each student wrote an Artist Statement describing the significance of the original graph and why they made their artistic choices. They also included a link and citation of the original graph.

The lesson, written by educator collaborator Ryan Becker, is available on Science Friday's website. 

Below are some great examples of student work. Can you spot the line graphs?
Student Work
PictureA gallery of some beautiful illustrated graphs created by my seventh graders.

1 Comment

Ms. V Goes to Washington

7/28/2016

0 Comments

 
This year, I left my middle school science classroom for an even more challenging and rewarding workplace— the United States Congress. Though I had to take a break from blogging while in my post, I am now able to share some reflections on my fellowship experience. So, why did move from Hawai'i to Washington, D.C. for the year? And what exactly did I get to do ?

It all began when I was one of 11 STEM educators honored with an Albert Einstein Distinguished Educator Fellowship by the Department of Energy. I was then selected for a Congressional placement and, after an interview process, was matched with the Office of Senator Al Franken (D-MN). As a comedian, writer, and politician, Al Franken has been a longtime hero of mine. It was incredible to work directly with Senator Franken to help improve the quality of education for students in Minnesota and across the nation.
Picture
Staffing Sen. Franken in an ESSA hearing
Senator Franken is a member of the Senate’s Health Care, Education, Labor and Pensions (HELP) Committee, and he is a champion for many education issues that I care about such as improving STEM education, expanding mental health care in schools, and improving access to accelerated learning courses. In addition to the K-12 issues, I was also able to work on a number of higher education priorities this year, including making college more affordable and holding predatory for-profit colleges accountable. Generally, I conducted legislative research, met with national education stakeholder groups, participated in meetings/hearings, and worked on a variety of writing tasks including drafting remarks and memos. 
​Certainly, this year has been an exciting time in K-12 education, as the re-write of No Child Left Behind, eight years overdue to be reauthorized, began to move. Now called the Every Student Succeeds Act (ESSA) this legislation directly affects nearly 50 million students and 3.4 million teachers in the nation’s 100,000 public schools. I helped write Dear Colleague letters to the conference leadership for preservation of Senator Franken's provisions in the final bill: STEM Education, Native American Language Immersion, Accelerated Learning and Mental Health in Schools. ​When my boss was officially named a conferee, I was able to staff him in conference meetings. 
Picture
A bill Introduction!
​And when it came time for Senator Franken to deliver remarks on the Every Student Succeeds Act, he arranged for me to get floor privileges so I could join him on the Senate floor. At various times before and after the bill’s passage, I led efforts to track Senator Franken’s provisions, including analyzing bill language and funding. After the passage of ESSA, I was engaged in its implementation—staffing the Senator at hearings, synthesizing Department of Education guidance into memos, and meeting with various education stakeholder groups and the new Secretary of Education himself.
​While I was happy to lend my expertise on K-12 issues, I also appreciated the opportunity to expand my knowledge about higher education issues. I became more expert on Federal Perkins Loans and the Federal Pell grants very quickly, in response to Congressional action. This year, I was charged with helping to re-introduce three of Senator Franken’s college affordability bills. Two of the bills are smaller in scope: Understanding the True Cost of College Act, which would mandate that colleges use a standardized financial aid award letter and the Net Price Calculator Improvement Act, which would make Net Price Calculators (digital tools for calculating the “net price” of a particular college for individual students) more user-friendly and accessible on colleges’ websites. Another bill, the College Access Act, which was substantially rewritten, was a broad bill aimed at lowering tuition for students by incentivizing states to invest more in their public colleges. 
Picture
The 2015-2016 Albert Einstein Distinguished Educator Fellows!
As an Einstein Fellow, I attended monthly professional development events that took advantage of unique DC resources such as meetings with the White House Office of Science & Technology Policy and a behind-the-scenes tour of the Library of Congress.  As part of my fellowship, I also received funding for attending professional travel, and I chose to attend SXSWedu in Austin, the National Science Teachers Association (NSTA) national conference in Nashville, the American Society for Engineering Education (ASEE) annual conference in New Orleans and a Google Apps for Education training in Boston. I appreciated the freedom to direct my own learning and be provided with so many amazing opportunities.

The Albert Einstein Fellowship Program gives expert practitioners a voice in national education policy, and I am now a very proud alumna. As a Congressional Fellow, I was afforded the opportunity to immerse myself in the life of a Hill staffer and make contributions to national K-12 and postsecondary education. My accomplished cohort of Fellows enriched my experience, and I want to acknowledge how much I learned from each of them. I am grateful for my family and friends for supporting me through this fellowship year. Most of all, I want to express appreciation for Senator Franken, his legislative team, and all his staff. I had an unforgettable year in Washington, DC, but I am excited to resume my teaching practice and get back into the classroom!
0 Comments

NOAA TEACHER AT SEA BLOGS!

8/19/2015

2 Comments

 
Picture
Teacher at Sea
I was selected as a 2015 National Oceanic and Atmospheric Administration (NOAA) Teacher and afforded the opportunity to participate in a fisheries research cruise. For three weeks in July, I sailed the Gulf of Alaska on the NOAA Ship Oscar Dyson and assisted in a walleye pollock acoustic-trawl survey.
Picture

Blog Post Archive
My blog posts from NOAA's Teacher at Sea website are linked below. Each blog entry is filled with engaging photographs to help tell the story. Please read about my adventures at sea!
 
Teacher (soon to be) At Sea
In this introductory blog post, I describe the Teacher at Sea program and introduce my particular cruise, a walleye pollock acoustic-trawl survey in the Gulf of Alaska.

Welcome Aboard the Oscar Dyson
My first post after boarding the ship in Kodiak, Alaska. Read about our scientific mission, enjoy my interview with Lab Lead Emily Collins, and take a peek inside my stateroom.

Gone Fishin'
Find out how scientists use acoustic data to study walleye pollock fish populations, read my interview with Survey Technician Allen Smith, and take a look inside the ship's galley.

Nets and the Wet Lab
Learn all about the different trawl nets employed in our survey and tour our ship's wet lab. Also, check out the gear we wear and read an interview with Lead Fisherman Kirk Perry.

Sorting the Catch
Read abut some of the fisheries data we collect in the wet lab, enjoy my interview with Chief Scientist Darin Jones, and check out our ship's lounge.

Icthysticks and Otoliths
Check out some of the novel technology we use in the wet lab, learn how fish ear bones can provide important data, and meet IT Specialist Rick Towler.

Lights, Camera, Ocean!
In this post, I describe how we are exploring the seafloor and its creatures with an underwater camera. Also, enjoy an interview with Ensign Benjamin Kaiser.

Back in Kodiak
Final thoughts on my voyage as Teacher at Sea aboard the Oscar Dyson with scientists from the Alaska Fisheries Science Center's Midwater Assessment & Conservation Engineering (MACE).
NOAA Teacher at Sea Program Application
Picture
The Science Team hits the deck as we cruise by Hubbard Glacier! Photo by Alyssa Pourminor
Picture
I don't think you're ready for this jelly! Photo by Emily Collins
2 Comments

OUR BIO BLITZ EXPERIENCE: LIFE LESSONS

5/19/2015

25 Comments

 
Star of the Sea Bio Blitz-ers: Ready for Adventure
Earlier this year, I had selected 20 seventh and eighth grade students to attend the 2015 Bio Blitz at Hawai'i Volcanoes National Park May 14th-16th and spend two nights at the park's Kilauea Military Camp. As I planned our field trip, I kept getting asked by just about everyone: What is the Bio Blitz? Well, if you break it down, bio means life and blitz implies it happens fast. Now that we have returned from our Bio Blitz adventure, I realize this name is most appropriate; we were indeed immersed in a fascinating array of life forms and our trip went by incredibly fast. 

So, officially, the Bio-Blitz is a 24-hour citizen science event, co-sponsored by the National Park Service and National Geographic, where teams of scientists, students, teachers, rangers, and community members collaborate to conduct a biological survey of a national park. That is, everyone works hard to find and identify as many of the animals, plants, fungi, and other organisms as possible. During the Bio Blitz, species unknown to the park are often discovered. This year's Bio Blitz, held at Hawai'i Volcanoes National Park, is the ninth of a series of ten annual Bio Blitzes that lead up to the National Park Service's 100th anniversary next year. 

As we gathered in the Honolulu airport Thursday morning, there was no doubt the Star of the Sea Bio Blitz-ers we were ready for adventure!
Picture
Ready to depart for Big Island...Hilo here we come!
Exploring the Lavascape
Our mission for the Bio Blitz was a biological inventory, but as soon as we entered the Hawai'i Volcanoes National Park, we could not ignore the amazing geology. Located on the youngest of the Hawaiian islands, Big Island, the park is named for its active volcanoes. Right away, you are aware of the primal forces of volcanism that can devastate lush rainforest with lava flows; this natural catastrophe, however, is followed by new life. A dynamic cycle of destruction and renewal is evident here. As we drove down the park's Chain of Craters Road, excitement was building and students were stoked to get out and explore the lavascape.
Picture
Pāhoehoe lava in foreground, ʻaʻā in background
Picture
Pioneering 'ae fern
There are two distinct types of lava visible here, pāhoehoe lava and ʻaʻā. Both types have the exact same chemical composition but are formed under different conditions. In its melted state, ʻaʻā has less gas, is less fluid, and has a lower temperature than pāhoehoe. We were able to observe the rough, jagged ʻaʻā formations, and we hiked all over the smooth, billowy pāhoehoe. You could see how when the pāhoehoe flowed, the more fluid lava underneath caused the partially solidified "skin" on top to ripple and swirl. The texture was so beautiful!
Picture
Exploring the lava field
Picture
A small ʻōhiʻa lehua grows out of a crack in the lava
Students took quite a few selfies, but they also took time to observe the lava closely. In the cracks, there were small 'ae ferns and ʻōhiʻa lehua trees growing. These important pioneer species are some of the first to colonize areas of recent lava flow, with forests bordering the lava field providing the seeds. Yet you cannot help but imagine what it must have been like when the Hawaiian islands first started to form. Since the islands were completely barren in the middle of the vast Pacific Ocean, it is said that all the native life had to come from the pioneering species brought here by the "three W's": waves, wind, and wings. 
Picture
Some of the Bio Blitz crew pose with Miss V!
We also had a chance to visit the Thurston Lava Tube, named for Lorrin Thurston, a local newspaper publisher who found the lava tube in 1913. Back then, lava stalactites hung from the ceiling of the tube, but people soon raided them all as souvenirs. Scientists estimate the tube was formed about 500-550 years ago when a channelized lava flow crusted over and the hot fluid core drained away. We all descended the narrow trail through lush rainforest, listening to a chorus of birds.  Then, the forest opened up to a  massive, cave-like lava tube. It was exciting to walk through the tube, wet with seeping rainwater and faintly illuminated by mounted lights. 

Picture
Entering the lava tube
Honoring a Sacred Place
One of the objectives for the Bio Blitz was to develop a sense of place and appreciation for biodiversity through field study in the local environment. Fortunately, the organizers of this year's Bio Blitz recognized the intimate connection between native Hawaiians and the natural world and made efforts to integrate indigenous knowledge and cultural protocol. In fact, the Bio Blitz alakai'i (cultural practitioners) led the students in komo (entrance) and mahalo (gratitude) 'oli (chants) to begin and end each student inventory. Click here for a copy of both chants in Hawaiian (with English translation). 

To help our Star of the Sea group prepare for visiting the sacred places of Hawai'i Volcanoes National Park, I had invited local kumu Toni Bissen, executive director of the Pūʻā  Foundation, to provide students with relevant cultural knowledge. Through interactive lessons during an all-day retreat, we investigated the land divisions, ahupua'a, on Big Island, as compared to O'ahu. Kumu Bissen also helped us practice our 'oli and plan our ho'okupu (gift) to Pele. Another fantastic resource has been Hawai’i Volcanoes National Park Cultural Anthropologist Keola Awong. She shares her perspective on Bio Blitz in an interview with National Geographic: "Traditional Knowledge Helps Us Understand Nature in Every Sense."

The komo 'oli, composed by Kepā Maly and performed by Keola Awong: 
Picture
Volcanic gases escape the Halemaʻumaʻu Crater of erupting Kīlauea Volcano
Picture
Offering the ho'okupu
Native Hawaiians believe that Kīlauea Volcano is the home of Pele, the fire goddess. In Hawaiian legends, this powerful, passionate deity of volcanoes created the Hawaiian islands. She is also referred to as Pele-honua-mea (Pele of the sacred land) and Ka wahine ʻai honua (the earth-eating woman). Since we were visiting Pele's home, we wanted to show proper respect by bringing her a ho'okupu (gift). Our gifts to Pele included 'oli, botanicals from our school campus, and much aloha.  
Picture
Our offering to Pele
Look out invasive ginger, here we come! 
Himalayan ginger was brought to Hawai'i as an ornamental plant due to its beautiful and fragrant flowers. In fact, it is also called kāhili ginger for the flowers resemblance to a kāhili , a feather staff Hawaiians displayed in the presence of royalty.  Unfortunately, this ginger has escaped local gardens and become one of the most invasive plants in Hawai'i Volcanoes National Park, growing rapidly and completely replacing the native rainforest understory. Due to its propensity to choke out native Hawaiian plants, the International Union for the Conservation of Nature includes Himalayan ginger on the "100 of the World's Worst Invasive Alien Species" list. 

So, before our Bio Blitz experience officially began, I decided we were going to spend a few hours serving the park by removing this invasive ginger. Volunteers Paul and Jane Field provided our Star of the Sea crew all the knowledge and tools needed for the task. After donning gloves, students grabbed their loppers (cutting tools) and got to work. Students slashed their way through a large marked area, cutting huge gingers to about knee-high and stacking the lopped stems in clear areas. The Fields will return to the area later and apply a low-concentration herbicide to the exposed stems, which will kill the gingers and not affect the native plants. 
Picture
Lopping and stacking (even in the rain!)
Despite the wet weather, everyone worked hard to clear the ginger, while avoiding any other plants with our loppers. We were proud to mālama the rainforest, so the habitat of native and endemic Hawaiian rainforest plants can be restored. Hopefully, the ginger we took out today will make it possible for native plants to grow, including pa'iniu (a Hawaiian lily), 'ama'u fern, and many others.  Invasive species like the Himalayan ginger, are one of the biggest threats to Hawaii's biodiversity.
Picture
#gingerslayer
Students Bio-Blitz the Rainforest!
On Friday morning, the official Bio Blitz Student Inventories began. These inventories, held simultaneously at five different rainforest sites in the park, were conducted by over 800 students from many different Big Island schools. Star of the Sea School, however, was the only participating school from another island. Students engaged in three different rotations: plants, birds, and arthropods. During each rotation, students learned about how scientists identify and classify members of those groups.  Students used the iNaturalist app on their mobile devices to photograph, identify, and map species they found, adding the observations to the official Bio Blitz inventory. 
I ka nānā 
no a ‘ike 

by observing, one learns 
I ka nānā no a ‘ike. This very old and important Hawaiian practice is the theme of this year's Bio Blitz. After our entrance 'oli and before the inventories began, students were encouraged to take some quiet time to engage and focus their powers of observation. Students began to observe the rainforest with all their senses (well, except for taste) and try to formulate questions about their surroundings. This task put students in the proper mindset for the biological inventories, as we were going to conduct them with great care and respect.
Picture
Taylor and the fern
At the plant rotation, students were most impressed to see the hapu'u, giant tree ferns endemic to Hawai'i. The fern's massive fiddleheads were covered with a silky fluff called pulu that protects the young fronds; native Hawaiians used pulu as an absorbent dressing for wounds. The students learned about how scientists set up transects and quadrats to measure plant diversity of an area. In the arthropod rotation, students got to find and classify tiny insects such as mites, crickets, and beetles. A large white 'beating sheet' was placed beneath a tree branch, and when the branch was beaten with a stick, arthropods fell out onto the sheet. To get tiny insects into smaller vials, students used a collection tool called an aspirator. Though you provide the suction on an attached tube to move the insect, a screen prevents you from sucking it into your mouth! 
Picture
'Amakihi, a Hawaiian honeycreeper
Hawaiian honeycreepers are a famed example of adaptive radiation, one species evolving into many to fill different niches. The varied beaks of the honeycreepers illustrate this concept for they are suited to different food sources. At the bird rotation, despite hearing a tremendous chorus of birds, it was challenging to find the animals themselves. Students used binoculars to spot two gorgeous species of honeycreeper: the red 'apapane and yellow 'amakihi.
Don't Worry, Be Happy (Face Spiders!)
One group of students began their afternoon by looking for one of Hawaii's most memorable endemic creatures, the Happy Face Spider. These spiders get their names not from their attitudes but from the markings on their abdomen that sometimes resemble a smiling face or clownish grin. Though it has been suggested that the color pattern might scare away bird predators, many scientists theorize these markings serve no purpose. Since spiders of the same species can exhibit an array of forms (colors and markings) due to gene variations, it is known as a polymorph. I have always wanted to find one...and if it was not too much to ask, I wanted to find one with a distinct happy face!
Picture
Doing our best happy face spider imitations
Our helpful Bio Blitz liaison, park volunteer Arthur Wierzchos, instructed us how to look for the rare spiders by carefully peering under the leaves of Kolea and Kawa'u trees. Arthur assured me that the spiders were in this area of rainforest, but he stressed that they can be quite hard to find. Within our first 30 minutes, Arthur spotted a female spider with eggs and we all got to see it! In the few hours, we found four more adult spiders, including three females and one male. Melia and Kayla found one female guarding about fifty baby spiders! 
Picture
Can you see the happy face? Photograph by Raphael Ritson-Williams
Picture
Mama happy face spider and babies! Photograph by Raphael Ritson-Williams
The Bio Cube: Not So Square
One of the student groups had the opportunity to participate in a Bio Cube project with acclaimed naturalist photographer David Liittschwager, who often works with National Geographic and Smithsonian. Our aim was to set up David's green metal frame, one cubic foot in area, in a diverse habitat and carefully identify and document all the life within it. It's a Bio Blitz on a small scale. In Smithsonian Magazine's The Insane Amount of Biodiversity in One Cubic Foot, David describes his One Cubic Foot book and mission. He makes a case for why these small spots, and small creatures, matter. While in the field with students, David took the time to give students technical tips on how to best photograph the plants and animals. We had a lot of fun scoping out a spot to put the Bio Cube, and we finally placed it in a gully dripping with mosses, liverworts, ferns, and other plants.   
Picture
David introducing the Bio Cube
The results of our Bio Cube are forthcoming, but we certainly enjoyed our time at Hawai'i Volcanoes with David and his assistant Zach. We all came away with a new appreciation for biodiversity and were inspired by the creative blend of art and science in David's work.
Picture
Immersed in the rainforest foliage
There's Fungus Among-us
Another student group started their afternoon by hiking the Kilauea Ike trail through lush rainforest all the way down to the solidified but still-steaming crater floor. Students followed the lightly etched trail across the lava field and saw steam vents, cinder cones, and spatter cones. Hard to believe that this field formed in 1959, when Kilauea Ike's Pu‘u Pua‘i cinder cone erupted and sent lava fountains almost 2,000 feet in the air! Students were stoked to explore this volcanic landscape together.
Picture
A hiking group takes a rest at the crater floor
Picture
Kilauea Ike crater
Some students then got a chance to participate in a public Fungus Inventory with members of the Hynson lab and the Amend lab, both with the Department of Botany, University of Hawai'i at Manoa. Those labs regularly conduct forays in Hawaiian habitats to assess the diversity of our fungi, so the Bio Blitz was part of this ongoing effort. 

With guidance from these expert scientists, Star of the Sea students helped collect fungus samples and assisted with initial cataloguing. They may have even helped discover species of fungus previously unknown to Hawai'i Volcanoes National Park!
Picture
Maya hunts for fungus
All specimens that were collected will be accessioned in the University of Hawaii's Rock herbarium; if fungi cannot be identified using macroscopic or microscopic features, then DNA sequencing will be utilized to help with the identification. Some of the inventory's samples have been found in the park before, while others are likely new records. Way to go, fungus finders!
Picture
Students and scientists working together
The Crater's Glow
Have you ever seen an erupting volcano? Since we were staying right in the park, a night hike to see the glow at Kīlauea's Halemaʻumaʻu Crater was absolutely essential. We bundled up in all our layers and, despite drizzly weather, walked the Crater Rim trail to the overlook at Jagger Museum. Though the lava lake had once again receded below the crater surface before we arrived in the park, there was still an amazing glow from the sub-surface lava. The volcano's plume and all the surrounding clouds were illuminated red. At one point, a piece of the crater wall fell in and there was a loud boom and tremendous flash of light. Pele!
Picture
Kayla admiring the glow
Picture
A spectacular scene unfolds on our night hike
Celebrating Biodiversity & Hawaiian Culture!
As a way to further marry science and culture, the park hosted the Volcanoes Biodiversity and Cultural Festival during the Bio Blitz. The festival featured a variety of exhibits, demonstrations, and hula and musical performances. Before we departed from the park on Saturday, students were excited to spent some time at the festival's many educational booths and try their hands at some traditional Hawaiian crafts. As we set out on this sunny day, the wide, shield-shaped dome of the park's other active volcano, Mauna Loa, was visible. In fact, Mauna Loa is the world's largest active volcano, with an elevation of 13,680 feet and encompassing 10,000 cubic miles. On our walk, we also saw some more of the park's unique features. 
Picture
Mauna Loa in the distance
We moved along the crater's edge by the steam vents and Steaming Bluff. These steam vents occur because groundwater seeps down to the hot, volcanic rocks below and then billows up as steam from cracks in the earth. It is safe to be near the steam vents, as long as you stay on the trail so you do not risk falling into one. We then walked to the colorful Sulphur Banks where in addition to groundwater steam, volcanic gases escape out of the ground. These gases are rich in carbon dioxide, sulfur dioxide and hydrogen sulfide (which stinks like rotten eggs!) Some sulfur gases deposit intricate yellow crystals here. However, other sulfur gases form sulfuric acid which breaks down the lava to clay, stained red and brown with iron oxide. 
Picture
Hiking by the Steaming Bluff
Picture
the Sulphur Banks
The Bio Blitz was a huge success and at the Closing Ceremonies we learned that over 1500 observations were uploaded into iNaturalist. And over 400 different species were formally identified by scientists, students, and community members in 24 hours! Read more about the official inventory results here. It was also announced that the 2016 Bio Blitz will be held in Washington. DC, with associated events held in national parks nationwide.
Life Lessons
The Bio Blitz trip was a tremendous learning adventure for the Star of the Sea team of students, teachers, and parent chaperones. Some lessons came swiftly in the moment, while others will grow over time, unfurling inside us like the majestic fronds of the hapu'u. 

Let's all spend more time outdoors! And when we do, let's slow down and closely observe the world around us. Our natural and cultural treasures, which can be regarded as one and the same, make Hawai'i a very special place. We are home to an impressive array of native and endemic life, but this biodiversity is under threat due to habitat loss and invasive species. Therefore, we all must work together to mālama Hawai'i. 
Picture
the endemic hapuʻu fern fiddlehead
I would like to extend a big MAHALO to... 
  • Chaperones Lyman Lacro, Yuri Fox, Dawn Johnson, Tim Johnson and scientist mentor Raphael Ritson-Williams for keeping all of our students safe and engaged. 
  • Principal Margaret Rufo, the faculty at Star of the Sea, and kumu Toni Bissen for your support.
  • Honored partners Jim Gale, Keola Awong, David Liittschwager, Paul & Jane Field, Arthur Wierzchos, Winn Brewer, and the Amend/Hynson labs for sharing your time and talents.
  • National Geographic and the National Park Service for making Bio Blitz possible.
  • The 20 participating students (and their families) for making Bio Blitz awesome!!
In closing, the mahalo 'oli, composed by Kepā Maly and performed by Keola Awong: 
25 Comments

CHICAGO (POLAR) BEARS: NSTA PRESENTATION!

3/15/2015

12 Comments

 
The (Cold and) Windy City
Chicago's famous football team, the Bears, was not named for the polar variety, but I came to this city to share about my Arctic expedition— a story of polar bears and sea ice!  I was selected to deliver a workshop at the National Science Teachers Association (NSTA) conference along with two other Grosvenor Teacher Fellows, Mrs. Bugg from North Carolina and Mr. Szymanski from right here in Chicago. We wanted to let teachers know about this amazing National Geographic/Lindblad Expeditions fellowship that brings teachers on voyages of discovery all over the world. 
Picture
Lake Michigan with the Chicago skyline
I took a long red eye flight out of Honolulu all the way to the 'Windy City' of Chicago. In fact, tens of thousands of science teachers from all over the country descended upon Chicago to attend the conference. The purpose of this huge gathering of science teachers is to learn about new classroom resources, enrich our knowledge of science, and gain new teaching strategies. I am grateful that Star of the Sea School supported my attendance at this worthwhile learning experience.  
After my long flight and check in at the hotel in downtown Chicago, I needed to go for a walk. It was just over 30 degrees out— good thing I brought my Arctic parka! I bundled up, grabbed a coffee, and headed out to explore. Chicago is a big city; in fact, it is the third most populous US city, after New York City and Los Angeles. The city is situated on one of the Great Lakes, Lake Michigan. I made my way down to the lake and walked along a path that followed the shoreline. The blue water, though shining bright in the mid day sun, was dotted with ice floes. I took in the Chicago skyline and, of course, I also found some snow to play in! 
Picture
Yes, there was snow on the ground!
Picture
NSTA Chicago!
Picture
Keynote speaker Neil Shubin
Keynote Speaker
In addition to hundreds of presentations by teachers and exhibitors, the conference also has a featured keynote speaker. I was so happy to find out that scientist and author Dr. Neil Shubin would deliver a keynote address this year. Dr. Shubin wrote on of my favorite books, Your Inner Fish, which has now also been turned into a three-part PBS television series. The book traces back the organs and limbs of the human body back millions of years in evolutionary history to our fish ancestors. 
In Dr. Shubin's talk, and Your Inner Fish, he also tells the story of his research team's 2004 discovery in the Canadian Arctic of Tiktaalik roseae, a 375 million year old fossil fish that has both fish and amphibian traits. Thus, Tiktaalik is an important transitional fossil between fish and tetrapods (creatures walking on land). In delivering his address, Dr. Shubin emphasized that science is a collaborative endeavor; that is, scientists work together to conduct investigations and solve problems. Though now based at the University of Chicago, Dr. Shubin had also served as Provost of Chicago's Field Museum of Natural History. I planned to visit this museum before I left Chicago.
Picture
NSTA Conference= Science teacher central!
Each day of the conference, there was a thick program that detailed all the available sessions. Most sessions were an hour long, so you could attend about seven a day. Every hour, there were so many great options, it was hard to choose. I went to workshops addressing a wide variety of topics: designing effective STEM programs, implementing middle school engineering projects, partnering with local science institutions to conduct field labs, and many more! In the convention center, there was also an enormous exhibit hall where all sorts of science related textbooks, technologies, and specimens were out on display from various companies and organizations.
Picture
Miss V checking out the program!
Picture
The exhibit hall was bustling
Our Presentation
This morning, about 30 teachers attended our session, and they were a very enthusiastic audience! Our talk was entitled "Exploring Global Regions and Resources with National Geographic." Mrs. Bugg, Mr. Szymanski, and I had all taken different voyages aboard the National Geographic Explorer through our fellowship: Mrs. Bugg journeyed through the Canadian Maritimes, Mr. Syzmanski got to explore Antarctica, and I, of course, was cruising through Arctic Svalbard. 

Our talk introduced the Grosvenor Teacher Fellowship and described our particular voyages using expedition photos. We emphasized the importance of imparting geo-literacy to students; that is, an awareness of global interactions, interconnections, and implications. So, we tried to describe how our adventures enriched our own geo-literacy of the regions we explored and how it impacted our teaching. Expeditionary learning can be incredibly powerful!
Picture
Our program listing...
Picture
Our presentation was well attended!
Picture
The Field Museum of Natural History
The Field Museum
The conference sessions kept me really busy, but this afternoon I finally had a chance to visit the Field Museum! The Field Museum of Natural History contains over 26 million biological specimens and cultural artifacts, but one of the most famous ones is Sue, the largest, best-preserved, and most complete Tyrannosaurus rex fossil ever found. Sue is 90% complete and measures 42 feet long from snout to tail and 13 feet tall at the hip and has a huge skull with 58 teeth. That T. rex is a really impressive fossil!
I love natural history museums, and this one of the best in the world. They had a special Viking exhibit with tools, jewelry, and other artifacts. The Hall of Gems had sparkling mineral samples from all over the world. The Evolving Planet hall was an interactive journey through the history of life, and it was complemented by the high-tech DNA Discovery Center. They even had a model Tiktaalik! I most enjoyed touring the Traveling the Pacific hall, especially the Aotearoa exhibit's Maori Meeting House and, of course, the Hawai'i exhibit. 
Picture
A model of Tiktaalik—and Dr. Shubin's photo!
Soon I would be actually traveling back to Hawai'i. I have learned a lot, but I am anxious to get back home to the warm weather and my wonderful Star of the Sea 'ohana. Aloha Chicago!
Picture
Goodbye Sue! Hope to see you again sometime!
12 Comments

Girls in STEM

3/3/2015

20 Comments

 
Encouraging all STEM Learners
Early this fall, I was contacted by one of the organizers of the Science Symposium for Girls here in Honolulu. She had seen me on the local news talking about my Arctic expedition as a Grosvenor Teacher Fellow, and she asked if I would be willing to present about the Arctic at this year's symposium. I could not pass up the opportunity to work with 5th-8th grade girls from island schools in the 2015 Science Symposium for Girls. The symposium, now in its 21st year, is presented by Sacred Hearts Academy in partnership with Bank of Hawaii Foundation. 

Females are often discouraged from STEM (Science, Technology, Engineering, and Math) subjects in school and are still underrepresented in potentially lucrative STEM careers. But why? While inherent gender differences have been ruled out by science, multiple environmental and social barriers influence the complex issue of female participation and achievement in STEM subjects. According to current research, these factors include persistent gender-bias about traditional male and female fields, a fixed mindset rather than a growth mindset for intelligence, lack of spatial skills training for girls, and a lack of confidence and feeling of isolation for girls in STEM subjects. 
Picture
Students worked in pairs on the ice inquiry.
My Symposium Workshop
I believe events like the symposium can not only boost girls' confidence in STEM but also help them develop relevant skills. Moreover, girls interested in STEM gain a sense of community through collaborative work. If we are going to increase our nation’s STEM participation and achievement, we need to support all learners!  Therefore, I was honored to be invited to participate in today's symposium. As a featured presenter, I delivered a workshop to two different groups of 20 girls.

For my workshops, I decided to focus on sharing about my Arctic expedition with a Prezi for the first half of the session and use to second half for an ice inquiry investigation. First, I introduced how I was able to travel to the Arctic through a teacher fellowship through National Geographic and Lindblad Expeditions. Next, I defined the Arctic region and pointed out some facts about Svalbard, the land of the Ice Bears. I shared the Arctic scenery and wildlife through my expedition photos.
Picture
Sea Ice...Don't "Let it Go!"
Picture
Students making detailed observations
In my talk, I told the story of how the polar bear depends on sea ice for survival. These top predators rely on the sea ice in order to hunt seals. However, I explained to the girls that like the polar bear, our planet also depends on sea ice. One reason we need sea ice is critical habitat for Arctic wildlife, from crustaceans to seabirds to walrus to the iconic polar bear. Also, our ice-covered polar regions reflect much of the incoming solar radiation, regulating global climate. In addition, sea ice plays an important role in the ocean conveyor belt, the global transport of seawater. 

Next came the hands-on part of the session! The ice inquiry allowed the girls to practice making predictions and then collecting data while investigating if an ice cube (dyed with blue food coloring so water is easier to observe) melts faster in fresh or salt water. We then discussed how temperature and salinity each affect density and related the concepts to the ocean conveyor belt. The girls in each session asked a lot of thoughtful questions about the Arctic and were really engaged in the lab portion as well. It was an awesome day of learning!
Picture
Science is FUN!!!
Meeting Miss America
The Science Symposium's keynote speaker was Nina Davuluri, who was Miss America 2014. In fact, she gained international acclaim by becoming the first contestant of Indian descent to win the title. Ms. Davuluri, a University of Michigan graduate, has always excelled in science and her platform was improving STEM education across the nation. In her keynote address, she shared her experience as Miss America and compelled the educators and families in the audience to support girls in STEM. Later in the afternoon, I could not pass up the opportunity for a quick chat (and a selfie) with an actual Miss America! 
Picture
Selfie with Nina Davuluri, Miss America 2014
20 Comments

Plankton Party!

2/6/2015

27 Comments

 
Focusing on Micro Life
Yesterday, all the middle school students had a chance to explore the macro organisms in the coastal habitat of Sandy Beach Park. Today, 6th grade students will turn their attention to the micro creatures floating undetected in the seawater that surrounds us: plankton. Tiny animal plankton (zooplankton) eat plant plankton (phytoplankton) and are eaten by other zooplankton. Some animal plankton (holoplankton) are plankton their whole lives such as copepods and pteropods. Other plankton (meroplankton) are only plankton when they are larvae then develop into adult forms (fish, crabs, oysters, etc...).  
Picture
Mr. Raphael helps prepare slides
Picture
Plankton tow complete!
To obtain the plankton for the lab, I went down to the Ala Wai boat harbor last night and conducted a plankton tow from a dock. I attached a tow line to a plankton net,  a funnel shaped, very fine-meshed net connected to a plastic bottle. When I towed the plankton net through the water for awhile, I got a concentrated sample of plankton in the bottle.  I even shined a flashlight at the opening of the net while it was in the water in order to attract more plankton. Once the bottle was emptied into a bucket of seawater, I was ready for class this morning! 
Picture
Using field guides to identify plankton
Picture
Miss Anuschka of Kahi Kai and her Cell Scopes!
Guest Scientists
I participate in plankton outreach with a local marine education group, Kahi Kai ('one ocean' in Hawaiian), and so Kahi Kai's co-founder and University of Hawai'i scientist Anuschka Faucci helped facilitate today's lab. She brought some novel tools to help us observe and record plankton. These tools for mobile microscopy are called Cell Scopes and were developed by a lab at UC Berkeley. The Cell Scope contains powerful optics and easily connects to an iPhone or iPad in order to document the plankton. Kind of like iMicroscopes! Scientist Raphael Ritson-Williams of Hawai'i Institute of Marine Biology's Gates Lab also joined us and assisted students with slide preparation and plankton identification. 
Picture
Recording a tiny Jellyfish with the Cell Scope
Picture
A copepod (top) and a polychaete worm
Picture
A crab larva (zoea)
Picture
A tiny jellyfish pulses into the frame
The Big Picture (of little Plankton)
Students were really excited to use the Cell Scopes to take pictures and video of the plankton. Many students commented that they did not realize there were so many little creatures in ocean water. A few students remarked that they have swallowed seawater and asked: "Have I drank plankton?" We all marveled at the diversity of the unique forms and appendages of the plankton, from the spiky-headed crab larvae to the delicately tentacled jellyfish. "It was surprising that such little creatures can eat, move, and grow just like us!" a student named Jack told me.  Remember, we depend on plankton for about half of the oxygen we breathe and plankton are the base of marine food chains. Our plankton study also relates to our ongoing investigation of climate change, as this global issue threatens these tiny life forms and all the ecosystems they support. 
Mahalo to Mr. Raphael and Miss Anuschka for helping us see the "invisible" world of plankton!
27 Comments

MAKAI FIELD STUDY: COASTAL ECOLOGY

2/5/2015

27 Comments

 
Our Outdoor Classroom
Picture
Hawai'i Nature Center educator Jamie shares place-based knowledge. Photo by Liam
Today, middle school students once again enjoyed a day in the best kind of classroom: nature! We spent the day at Sandy Beach Park in Hawai'i Kai, where students investigated the impacts of climate change in our local environment. This field study was the makai (coastal) component of our From Mauka to Makai: Understanding Climate Change Impacts in the Ahupua’a program, a partnership with the Hawai'i Nature Center. Today's outdoor science learning included a lesson on marine debris and an opportunity to help clean up the beach. Students also explored the tide pools, assessing environmental conditions and biodiversity. I think everyone's favorite part was searching for creatures in the intertidal zone. 
Marine Debris and Garbology
Picture
After setting up beach transects, students quantify micro plastics and other trash
The Hawai'i Nature Center environmental educators and cultural practitioners infuse our program with place-based knowledge and Hawaiian values. One of the central themes of our program is to mālama Hawai'i (to care for Hawai'i). For our coastal component today, we cared for Hawai'i through service learning; that is, we learned about the environment by helping to protect it!  Official agencies in charge of important natural areas often do not have the funds or manpower to maintain them, so many people choose to volunteer in conservation efforts. Everyone's help is needed in order to help our environment be more resilient to the effects of climate change. I appreciated the help of all the middle school students today!
Picture
Cleaning up the beach
Human debris, or garbage, from both land and sea collects in the ocean and ends up on our beaches. Unfortunately, about 90% of marine debris is plastic, which is not biodegradable.  This plastic trash, ranging from micro to massive, has far reaching impacts and is very dangerous for birds, turtles, and marine mammals. We can all make a difference by using less and properly disposing or recycling unwanted items. Another great way to help out is by participating in local beach clean-ups. On our island, almost every weekend there is a beach clean-up where you can volunteer with your family.
Tide Pool Study
When I was a little girl on the New Hampshire coast, my favorite activity was to explore the tide pools, scrambling along the rocky intertidal zone from pool to pool.  I would lift up big piles of seaweed and scan for scurrying crabs and clinging sea stars. I would wade in the deeper pools. And I would always remember what my father taught me: you can pick up a rock to look underneath but always put it back just as it was— something makes a home there.  Tide pool exploration was an important training ground for a curiosity about the natural world and a career in science education. Thus, it is always a pleasure to share this particular outdoor classroom with students.  
Picture
Everyone is excited to explore the tide pools!
In October's mauka study, we talked about how conditions in the uplands affect the marine environment below. From the mountains to the sea, our watershed is interconnected and interdependent. Pollution and sediment are often carried by streams and channels to the estuaries and eventually the ocean. The estuary, where the fresh and salt water meet, is a critical nursery, as well as important habitat for organisms like the Hawaiian 'o'opu whose life cycle includes both stream and ocean environments. 

Here at Sandy Beach Park, students conducted a field study similar to that of the stream study, this time in coastal tide pools. Students made predictions and then assessed tide pools in different intertidal zones: upper, middle, and lower. In each of the tide pools studied, student measured and recorded pH, dissolved oxygen, temperature, and other environmental data. Students also searched for creatures in the tide pools to quantify the biodiversity.
Picture
Discussing the pH measurement and other data collected
Students discovered some very interesting marine invertebrates in the tide pools!  We placed some of the animals in buckets, so everyone had a chance to see them (don't worry, they were handled carefully and put back where they came from!) Students laughed at the snakelike movement of brittle star arms.  They got a chance to feel a sea cucumber's soft body and let a hermit crab scoot across their hand. And they saw how a Spanish Dancer nudibranch got its name as it gracefully undulated through the water, crimson colors blazing. We discussed the unique adaptations of these creatures for life in the intertidal zone. Remember, climate change threatens our ocean and its impacts will be felt in the intertidal zone as well. Warmer, more acidic water and rising sea levels will shift habitats and threaten biodiversity. 
Picture
Observing tide pool biodiversity
Picture
Brittle Star
Picture
Spanish Dancer nudibranch
The more time we spend in nature, the more we appreciate its beauty, resources, and diverse array of living things. We have to make our home while allowing other creatures to keep their homes. If we come to love nature, we will fight to protect it. So get out there and explore your world! 
27 Comments

ACID OCEANS?

1/28/2015

15 Comments

 
Ocean Chemistry
By now, we are familiar with the concept of global climate change due to humans burning excessive amounts of fossil fuels that release carbon dioxide and other greenhouse gases. However, not all carbon dioxide ends up in our atmosphere. Approximately 1/3 of that carbon dioxide ends up getting absorbed by the ocean, where it is causing ocean acidification. This issue, which you may not have heard much about, is a serious threat to shell-forming plankton, corals and other organisms. So, how are the oceans becoming more acidic? What are the potential effects of ocean acidification? 8th graders students have been investigating these questions during an applied chemistry unit. 
Picture
When carbon dioxide dissolves in seawater, it forms carbonic acid, which makes the water more acidic (lower pH). The increased acidity can dissolve the calcium carbonate shells made by coral, shellfish, and some types of plankton. However, there is also a secondary problem. The carbon dioxide reacts with carbonate ions that are naturally dissolved in seawater. Carbonate ions are important because marine organisms combine them with calcium to form calcium carbonate they need to make their shells. When the concentration of carbonate ions in the ocean decreases, organisms do not have enough usable carbonate  to build their shells and grow.
Picture
Activating the yeast to begin the investigation!
Modeling Ocean Acidification
So students could explore ocean acidification first hand, I borrowed a kit from the University of Hawaii's Center for Microbial Oceanography: Research and Education (C-MORE). The kit had all the materials for an experiment that simulated ocean acidification using active yeast to generate carbon dioxide.  Students used Lab Quest handheld computers with probes to measure the carbon dioxide generated by the yeast and the effect of this carbon dioxide on the pH of water.

Yeast, a living fungus that respires, was placed in a bottle with sugar and water to activate it. The carbon dioxide gas released by the yeast respiration was directed through rubber tubing to two different places: a chamber of air, where carbon dioxide was measured by a special probe and a bottle of water, where the pH was measured by another probe. In the investigation, students observed the carbon dioxide levels dramatically rise as the pH slowly lowered. When they graphed and analyzed their data, students discovered for themselves the relationship between carbon dioxide and pH.
Picture
Collecting carbon dioxide data
Protect Our Coral Reefs 
In addition to our hands-on labs, students have also been analyzing atmospheric and ocean data sets that indicate a rise in carbon dioxide that contributes to global warming and ocean acidification. Moreover, we have discussed the real-world impacts of these issues. One of the most devastating predicted consequences of ocean acidification is the degradation of reef-building corals. Here in Hawai'i, we rely on healthy coral reefs for the diverse array of life they support, as well as their recreational uses, fishing resources, and shoreline protection. Let's work together to combat ocean acidification, another disastrous consequence of climate change. 

How will YOU make a difference? 
Picture
A healthy Hawaiian coral reef!
15 Comments
<<Previous

    Author

    This blog documents my adventures teaching secondary science, as well as my other learning experiences. Mahalo for reading!

    Picture

    Archives

    April 2017
    November 2016
    July 2016
    August 2015
    May 2015
    March 2015
    February 2015
    January 2015
    November 2014
    October 2014
    September 2014
    August 2014
    June 2014
    May 2014

    Categories

    All
    Bird Cliff
    Climate Change
    Expedition Photography
    Fisheries Research
    Girls In STEM
    Glacier
    Goodbye And Mahalo
    Hiking
    Kayaking
    Makai Field Study
    Mauka Field Study
    NOAA
    Ocean Acidification
    Plankton
    Polar Bears
    Solar Energy
    Teacher At Sea
    Tide Pools
    Video Expedition Report

    RSS Feed

Cristina Veresan    Science Educator
Proudly powered by Weebly
✕