Melissa (Lissy) Enright, a graduate student in ECOSS at NAU, shared her research on the hydraulics (water movement) of giant redwood trees with the high school students in the iCREATE class at NAU.
Lissy shared some of her background with the students including working on an oceanographic vessel with the Sea Education Association, working for the National Park Service in Hawaii, and for American Conservation Experience as an AmeriCorps Member in both Flagstaff and Alaska! She also worked with Honko, an NGO (non-governmental organization) working in partnership with the coastal communities of Madagascar on mangrove conservation. She showed the students the website for the Student Conservation Association where you can search through their list of opportunities, including those for students under 18 years old!
Lissy's experience helped her to get a "real job" working with the US Forest Service in Alaska doing a Forest Inventory and Assessment. She also worked in Northern California where she now has her research area studying water stress at the top of Redwood trees.
Lissy illustrated how the stems of the tree branches can get embolisms (air bubbles) from high water stress. She climbs the trees using a jumar system and then brings the branches home to Flagstaff to study the hydraulic conductivity of the tree.
Lissy asked the students why the pine needles and branches might be ore water stressed at the top of the trees than down below. Even though the base of the redwood is in an often moist environment, the tops of the trees are more exposed to sun; but the primary reason is that water is pulled all the way up the xylem (water tubes) of the tree from the ground to 250-400 feet! So the top of the tree is more like a dry climate.
Lissy took the students into the laboratory where she measures the hydraulic conductivity of the branches. She had them assist her with several experimental procedures she uses to determine levels of water stress in the redwood trees.
She told us: We measure hydraulic conductivity on the hydraulic line, a system of tubes that connects a stem segment to an upstream reservoir of solution (water with a tiny bit of potassium chloride)suspended a meter above the sample, and a downstream balance. The water flowing through the sample is measured as it gets to the balance. We use this measurement to infer about the degree of embolism, or air bubbles blocking the flow of water, present in the xylem cells. If the conductivity is very low, for example, we presume that there are a lot of embolisms, and the tree the sample came from was subject to a lot of water stress.
In the image above, a student measures pressure for another experiment. Lissy explains: When a piece of a plant is clipped off, the water inside sucks back away from the cut surface. This is because there is tension in the water in plants. If the plant is more water stressed, the tension is greater. We can measure this in units of pressure with a pressure chamber. We first cut a sample, then insert it into the chamber with the cut end extending out of the hole in the top. When we turn up the pressure in the chamber, the water will be forced back to the cut surface. We measure the pressure at which the water reaches the surface, and know that that number is equal to the tension that existed in the water in the plant before we cut it. If it takes a lot of pressure, then the plant was very water stressed.
Thank you, Lissy, for the wonderful presentation and the engaging hands-on research in your lab!
Guest Blog Post by Larry Hendricks, PR and Publications Coordinator, Coconino Community College
CCC CAVIAT Students Focus on Health Professions
They’re taking college classes, but they’re still in high school. Not only that, but they’ve proved their mettle in problem solving in the health occupations, and they’re on their way to a statewide competition in April.
Twelve students in Coconino Community College’s Dual Enrollment/CAVIAT BIO 298 class took exams on Creative Problem Solving through Health Occupation Students of America (HOSA). This class is taught by CCC Science Faculty and Bridges to Baccalaureate Principal Investigator Dr. Aaron Tabor, NAU Graduate Students and CCC Instructors Christina Baze and Bobby Woodruff.
“Four of the students qualified to go to the state level,” Tabor said, adding that all of the students are equally intelligent and deserving of accolades. The team placed ninth overall.
The four students, all 10th graders, are Cate Cole and Ethan Perelstein from Flagstaff Arts and Leadership Academy; and Kaleb Herrelko and Jacqueline Slack from Coconino High School.
According to information from HOSA, its mission is to “promote career opportunities in the health care industry and to enhance the deliver of quality health care to all people.” The focus is on health science education and biomedical science programs to promote interest in pursuing careers in the health professions.
To prepare for the exams, Slack said that the team began by reading books on creative problem solving and by researching various health-related problems in the community. Cole added that the team tested one another with problems as well as timing the testing for solutions.
During testing, the team had 30 minutes to prepare and had 8 minutes to present their case in front of a panel to judge. They made the grade, and now they’re heading to Tucson for the statewide competition.
“I personally am excited to meet other students like us, who are science minded,” Perelstein said.
Herrelko added, “That could be fun.”
Slack said, “I’m very excited to compete.”
Cole said, “I’m really excited to see what we can come up with – real-world problems that affect millions across the globe.”
The team members are part of the iCREATE High School Bioscience program. The class offers six credit hours from CCC to apply to a college degree. The students meet five days a week at the Center for Teaching and Learning at Northern Arizona University for lectures and labs. The program is offered through the Coconino Association for Vocations, Industry and Technology.
“I love coming here and getting a taste of what college and medical school will offer,” Cole said.
Perelstein said, “For me, this class is challenging, it’s engaging, and that’s what I really love.”
Herrelko said, “I like the challenge and it requires more persistence.”
Slack said, “I’m excited that every day after school, I get to be around science-oriented, like-minded people.”
For Tabor, he said he thoroughly enjoys being the instructor for the class.
“Frankly, it’s the students,” he said. “I never in a thousand years anticipated teaching K-12 students at all, but this group of students is one of the best I’ve ever encountered.”
Tabor added that his job is to educate the students on the translational sciences and the epidemiology field, but he also is to assist them with their professional growth – creating curriculum vitaes, attending conferences, performing public speaking, seeking publication, and more.
As for the state competition in April, Tabor said the students can go to the national level in the event if they are rank high enough for it. So, the journey may not be over for one or several of them after the state competition.
And as for the future, all four team members have plans. Cole’s goal is to become a physician, an obstetrician. Perelstein is interested in mechanical engineering, particularly “biomimicry,” or solving problems through evolutionary processes. Herrelko is still exploring, but he knows he wants to be an engineer of some sort. Slack is dedicated to becoming a neurosurgeon.
“We challenge one another and work to put our best foot forward as a team,” Perelstein said.
The iCREATE HS Bioscience program is funded by a grant from the National Science Foundation. Community partners include CCC, CAVIAT, NAU, TGen North, North Country HealthCare, Coconino County Public Health Services District, and Flagstaff STEM City.
Guest Blog Post by Janelle Reasor, Art and Science Integration Specialist
Marshall Magnet Elementary School has the longest running science fair of all 28 schools in Flagstaff! They had 199 projects from grades 1 through 5 in the categories of Earth, Life and Physical Science. There were also many student demonstrations.
The 5th grade students were all interviewed by their projects, and then all the projects were displayed in the gymnasium. Twenty of the student projects will advance to the Regional Science Fair in Prescott, Arizona.
Thank You to all 28 of our Judges and our 7 interviewers!
From Coconino Community College:
Melinda McKinney, Alejandra Cardoza, Jay Patel, Brandon Hankins, Sun Jeon, Justin Lovett, Ambrielle Begay, Jenille Montelongo Rodriguez, Zachary Thomason, and Lexia Henderson
From Northern Arizona University - Carissa Miyano, Dr. John Tingerthal, Jill Hager Cocking, Dr. Brendan Russo, Hanako Ueda, Chris Wirth, and Melissa Dimas
From W.L. Gore & Assoc. - Mike Heinzer, Justine Roberts, and Alex Leonard
From The Museum of Northern Arizona - Courtney McDaniel, Florence Borgeson, and Jennifer Glennon
From the Rocky Mountain Research Station, USFS - Grace Sorenson and Roy Lopez
From FUSD, Retired - Sue Holiday
From The Arboretum - Coreen Walsh
5th Grade Interviews Conducted By: Dr. G. Kent Colbath, Geoff Kie, Dr. Jamie Sanderlin, Judy LeFevre, Moragan Guild, Cindy Foubert, and Heather Overton
By Dave Engelthaler, Associate Professor at the Translational Genomics Research Institute and the Chair of the Northern Arizona Leadership Alliance. This column was adapted from the keynote speech, given by the author, at Science Foundation Arizona's "Giving a Voice to STEM" Conference at NAU on September 30, 2016.
I have often referred to Flagstaff as the Shining City on Arizona’s Hill. It is no accident that I borrow this phrase from the famous, precisely American, ideal of a “Shining City on a Hill”. The early pilgrims imagined that they could create such a community for themselves after escaping the historical norms of European controls on destiny.
Three hundred years later John F. Kennedy reminded of this founding ideal, stating that the world was watching our shining city and that we must live up to our promise; shortly there after, we embarked on one of the greatest journeys of all time and put a man’s foot on the moon (Flagstaff had something to do with that, more on that below).
Twenty years later, Ronald Reagan again reminded us of this American City on a Hill ideal; and while we may not often remember Reagan as a champion of science, he was convinced during his tenure to not only not cut the budget of the National Science Foundation, but rather double it, before he left office. But, as under Kennedy and Reagan and other presidents in before and after, no matter what our economic and cultural condition, we have always led the way in advancing humanity through the sciences.
It is this ideal that convinces me that in Flagstaff, we are a Shining STEM City on Arizona’s Hill.
In August of 2012, a group of Flagstaff Leaders, Businessmen, Educators, Scientists, and Concerned Citizens gathered in the woods on the base of the San Francisco Peaks. This group coalesced around the idea that Flagstaff is a STEM-rich City and that we as a community, businesses and schools, elected leaders and CEOs, teachers and families, needed to collectively band together to bring this rich surrounding to bear on the education of our children and enrich our communities.
There, up on our Hillside, we all mutually pledged our time, talent and resources towards making the STEM City ideals happen. In short – our goal was to have the most STEM literate graduates living and working in a thriving STEM-based economy.
We also had a unofficial motto for the day: “Dare Mighty Things”, which we borrowed from the Jet Propulsion Laboratory, who had, just the preceding night, coordinated the landing of the Curiosity Rover on Mars (and again, Flagstaff had something to do with this mission). And we both stole that from Teddy Roosevelt’s famous “Far better it is to dare mighty things” speech.
Historian, Fredrick Jackson Turner, just a few years before TR’s famous speech, gave us his “Frontier Thesis”, and proclaiming that with the end of the American Frontier, so might be the end the American spirit. While Jackson aptly, and controversially, linked Americanism and American spirit to the discovery and exploration of the American Frontier, I feel that he missed the mark in not understanding the new frontiers that we would identify and explore.
Our increased understanding and use of science and engineering opened up brand new frontiers, beyond land and sea.
One such Frontier, The Space Frontier, was no longer a pastoral landscape to watch from afar. Our STEM City has been at the forefront of the exploration of this new frontier, from the discovery of Pluto, to the training of Apollo astronauts in our backyard, to the camera control of the Mars Rover from our USGS facility, and now finally to the deep space explorations through our Discovery Channel telescope, providing insight into the beginnings of our universe and images of a frontier previously unseen.
Likewise, Flagstaff is home to TGen and the new Pathogen and Microbiome Institute at NAU, where some of the brightest minds are exploring another previously unseen universe – the microbiome. Every day, scientists in Flagstaff are embarking on the incredible journey into the human microbiome – the unseen ecosystem of bacteria and viruses and fungi that live on and in the human body. We are trying to understand how these microbes live, compete, collaborate and otherwise interact during our healthy and disease states. We, ourselves, our bodies, are the new frontier – and again that frontier exploration is here in our STEM City.
And we could go on about the new frontiers ventured by W.L.Gore engineers and SenesTech scientists and MNA paleontologists and Park Service geologists. The frontier is here in our STEM City and some of the greatest pioneers are the trainers of our next generation– the teachers and education professionals of our great public, charter and private schools. Most are ready, willing and able to interact with all of these resources; and some, like former STEM City Teacher of the Year Jillian Worssam, just kick down the door and say: “Let’s do this thing!”
Our STEM City is Worssam’s wildly successful Scientists in the Classroom. It is the Flagstaff Festival of Science (the longest running one in the country). We are the Coconuts; we are the Annual STEMMY'S Awards Ceremony; the STEM Art Competition; and the Super Bowl of STEM in the Dome event (where upwards of 8% of Flagstaff turns out!); we are the Space Station Science Experiment and the High Altitude Balloon Launches; and the superstar Killip Kindergarten Chess team that likes to challenge our Mayor. We are seventh-grade girls wearing lab coats inside a world-class research lab and we are a group of high schoolers rafting down our majestic Canyon to learn our geologic past. We are the Chamber Coding Camps. We are grad students teaching and learning in the K-12 classroom. We are parents, students and teachers on a hill having a star party. We are, in a phrase, America’s First STEM Community.
Arizona, and the rest of the country, is watching our shining STEM City
and we must live up to our promise.
Guest blog by Carrie Jenkins and Rick Treadway, 7th grade science teachers at Sinagua Middle School
On April 11, 2016 a group of 48 Sinagua Middle School 7th graders headed into Oak Creek Canyon for an afternoon of water testing at Slide Rock State Park. After eating lunch at the park, we walked to the Apple Barn where we watched a short documentary about Oak Creek called “Loved to Death: The Story of Oak Creek.” The video documented the 2014 Oak Creek Ambassador Program in which concerned citizens with the support of local university students from U of A, NAU, ASU, and the Friends of Oak Creek, removed large quantities of trash brought into the park and along the creek.
Oak Creek is claimed to be the 3rd purest water in the world at its source. However, the trash left behind by the hundreds of thousands of visitors each year directly impacts the water quality of Oak Creek and leads to increased levels of e. coli causing adverse effects to the local ecosystem. Under the direction of U of A microbiologists in a mobile laboratory the students tested E.coli bacteria levels, water flow rates, pH, turbidity, nitrates and dissolved oxygen. Students learned proper water sampling protocol, testing procedures and levels that indicate healthy conditions for organisms within the aquatic ecosystem. Most importantly, we learned that we can each be an ambassador for Oak Creek.
Thank you to the SFAz+8 Pathways grant through Coconino Community College for funding the bus for this fieldtrip!
Superbowl of STEM
The 3rd Annual Flagstaff Community STEM Celebration kicked off the week on Monday, March 7th at the NAU Skydome with almost every school, STEM business, government agency, and non-profit in Flagstaff! You can relive the excitement with Flg4TV's 2 minute video here!
2015-2016 STEMMY Awards
The 4th annual awards, funded by the Northern Arizona Leadership Alliance, were received by students Rebecca Adams (FHS and CAVIAT), Teacher Ted Komada (Killip), Community Leader Bruce Sidlinger, and STEM Partner Nestlé Purina. You can read Corina Vanek's article and see Jake Bacon's photographs in the Arizona Daily Sun article here.
High-Altitude Balloon Launch
On Wednesday, March 9th, Teacher Kaci Heins and 100 NPA 6th graders sent their payload to over 106,000 feet on a high-altitude balloon from the Flagstaff Airport. Community Leader Bruce Sidlinger and his Aeronautics Engineering class from Flag High, Airport Director Barney Helmick, the Coconino Amateur Radio Club, the Civil Air Patrol, and many other community partners were there to assist. You can see images and hear the story from KNAU's science and technology field reporter Melissa Sevigny here.
Women Executives in STEM Panel
NAU hosted the panel on Thursday, March 10th. All of the women had connections to NAU and facilitator Elizabeth Glass recommended that the many students in attendance use their alumni network as they search career opportunities.
AZ North Regional
The Skydome was brimming again on Friday and Saturday with the CocoNuts and 52 other teams, for NAU's inaugural FIRST Robotics Arizona North Regional contest, which pitted robots against each other to try to take down a castle. You can read Corina Vanek's article on the event here. Microchip sponsored pit tours by volunteers from many of the teams, as well as a VIP luncheon that was well-attended by Flagstaff's government, business, and education leaders. FIRST, which stands for --- , is a non-profit founded in 1989 by Dean Kamen, the inventor of the Segway. It encourages students to pursue STEM and also develops skills in teamwork, problem-solving, creativity, and gracious professionalism.
Congratulations to everyone on helping make STEM Week 2016 the best ever in Flagstaff STEM City!
Marsha Reynolds, 5th grade teacher, and Jessica Soifer, Art teacher, have partnered for an after school 5th grade STEAM Club that has students engaged in numerous projects. Marsha borrowed Flagstaff STEM City's Engineering Adventures Kit on Rockets and Rovers called "Lift Off". Note: Look here if you are also interested in borrowing an engineering kit!
Marsha Reynolds writes: "Both Mrs. Soifer and I have been privileged to help lead the 5th grade STEAM club at Knoles Elementary. We enjoy working with a dedicated group of students who are interested in science, art, engineering and technology and on top of that, are willing to stay after school once a week for the activities we provide. These students are creative, and do a wonderful job of persevering through the projects that we introduce."
These dedicated teachers also bring in other professionals. Tenielle Gaither, from the USGS Astrogeology Center, observed students building their rovers. And Jeff Jones, the Dean of Arts and Sciences at Coconino Community College, brought in a 3D Printer and students learned how to use the printer to create something original.
Jessica Soifer writes: "The motivation behind STEAM club is our dedicated students. The students show up once a week after school with eyes wide open and execute the daily projects. We have designed our lessons to ensure the students are exploring a range of content among Science, Technology, Engineering, Art and Mathematics. The students explore through experiential learning, discover new ideas and designs, while problem solving, working collaboratively, and having fun. Marsha Reynolds and I work well together. We each have different strengths that compliment each other to bring success to the STEAM club. We collaborate and provide an easy going vibe and flexibility to facilitate a fun and exciting learning environment for all students."
Congratulations to this successful collaboration that has so many students happily engaged in such a variety of projects in their after school STEAM Club!
Gretchen Downey, 8th grade MITe (Middle School Institute of Technology and Engineering) teacher at Sinagua Middle School, took her engineering students on a field trip to Coconino Community College on Friday, October 23rd. The field trip was funded by the SFAz+8 grant which funds 8th grade students from Mt. Elden Middle School and Sinagua Middle School to explore engineering pathways in higher education and businesses. Addison Guevara, NAU student and STEM City Intern, assisted with organizing and leading the trip.
Philip Martinez, the engineering, math, and physics instructor at CCC, organized the events at the college. Students were divided into three groups that rotated through two engineering challenges and a tour of the college. Mike Luna led the tours with Kevin Mullins informing the students about dual enrollment and CAVIAT programs available to them in high school. Christine Baze, science instructor at CCC, led one of the engineering activities, while Philip led the other one. Students had a great time building and testing a crane and a balloon rocket!
Thank you to Flagstaff's Ross Dress for Less for providing shoe boxes for the Build-A-Crane activity showcased below!
Flagstaff STEM Coordinator