Science

Explore scientific
questions and design
relevant solutions

At Walker’s, students learn the fundamental principles of science and the essential skills required to investigate the foundational disciplines of physics, chemistry, and biology.

In addition, students are able to go beyond the basic science requirements and explore individual interests through numerous science electives. With this strong foundation, students engage in inquiry-based discovery, research-guided coursework, and student-driven exploration of topics that are engaging and relevant to their lives.

As science educators, we prepare students to think critically and to recognize bias as they explore scientific questions through student-designed lab experiments. The rich experience of hands-on labs supports individual creativity and curiosity, and allows students to engage in argument-driven inquiry, analyze data, and finally draw conclusions based on observation and experimentation.

Students also gain valuable writing and presentation skills and become effective communicators as they present their findings. With the skills and content that they develop, students emerge as lifelong learners and innovators who have the confidence to tackle unfamiliar problems and the courage to be resilient as they work to design solutions to these problems. We strive to inspire future scientists as well as citizen scientists and enlightened future voters, mindful of the scientific issues that are locally and globally relevant.

Each student is required to complete three years of science; Physics during 9th grade, Chemistry during 10th grade, and Biology during 11th or 12th grade. The concept of “physics first” provides students with a strong scientific foundation on which Chemistry, Biology, and all science electives are built. Most students at The Ethel Walker School go beyond the graduation requirement and take science courses all four years, and many students take multiple science electives during the 11th and 12th grades.

Science Faculty

Dr. Emma Mitchell

Science Department Chair, Physics Faculty

Dr. Emma Mitchell

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B.A., Vassar College
Ph.D., University of Virginia

A graduate of an all-girls independent secondary school, Emma earned her bachelor’s degree in Physics from Vassar College and her Ph.D. in Engineering Physics from the University of Virginia. Her doctoral research was in laboratory astrophysics and astrochemistry, focusing on thermal and radiation processing of frozen water in astronomical environments. She has received fellowships from both the NASA Earth and Space Science Program and the NASA Virginia Space Grant Consortium. She has been teaching at Walker’s since 2016. Emma also serves as President-Elect of the American Modeling Teachers Association, a non-profit organization that provides professional development in the Modeling Instruction guided-inquiry approach to teaching science. In her free time, Emma is also a passionate cook and baker.

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Dr. Melissa Bernardo

Science Faculty

Dr. Melissa Bernardo

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B.A., Eastern Connecticut State University
Ph.D., Wesleyan University

Melissa joined Walker’s in 2017 after completing her Ph.D. in Biology from Wesleyan University. Her dissertation dealt with nutrient-mediated manipulation of host-feeding behavior by a parasitoid. Melissa has taught a range of topics at the university level and brings her knowledge and enthusiasm to Walker’s chemistry, biology and environmental science classes. She also coaches volleyball and softball.

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Jeff Gonzalez

Middle School Science/STEAM Faculty

Jeff Gonzalez

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Dr. Suzanne Piela P’22, '28

Science Faculty

Dr. Suzanne Piela P’22, '28

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B.S., University of Notre Dame
D.V.M., University of Minnesota

Suzanne joined The Ethel Walker School in the fall of 2007 and since then has taught AP Biology, Advanced Biology, Honors Biology, General Biology, Human Anatomy and Physiology, Honors Biochemistry, Equine Science, and an independent study in Microbiology. Suzanne earned her B.S. in Biology at the University of Notre Dame and her D.V.M. at the University of Minnesota. She also did a small animal internship in medicine, surgery, and emergency medicine at Rowley Memorial Animal Hospital in Springfield, MA.

Suzanne practiced as a small animal veterinarian for 10 years before transitioning to teaching. Prior to her role at Walker’s, she worked as a park naturalist and taught ecology at the elementary level, and worked as a middle and high school science and math tutor.

Suzanne is currently the Science Department Chair, coaches JV Tennis, and loves to ride at Walker’s barn when she has time.

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Sandra Quinlan P'16

Chemistry Faculty

Sandra Quinlan P'16

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B.A., SUNY
M.A., Syracuse University

Sandra joined The Ethel Walker School in the fall of 2006 and, since then, has taught many courses in the science department, including Chemistry, Honors Chemistry, Biology, Honors Biology, Physics 9, Honors Physics 9, Physics 11-12, and Human Biology (Middle School). In addition, she served as the Junior Project Coordinator for over 15 years. Sandra earned her master’s degree in Chemistry from Syracuse University and spent the early part of her career working in the pharmaceutical industry. Sandra was a research assistant in Discovery at Pfizer, then a research scientist in Process Development at Bristol-Myers Squibb for 11 years before transitioning to teaching. 

Sandra is currently co-teaching a new course, Research in Molecular Genetics (Stan-X class) and has developed and maintained a research fly lab on campus.

 

Dr. Julia Sheldon P'20, '23

Science Faculty

Dr. Julia Sheldon P'20, '23

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B.S., University of California at San Diego
M.S., Yale University
Ph.D., Yale University

Dr. Julia Sheldon P’20, ’23 began teaching science at Walker’s in 1998. Her childhood fascination with the natural world led her to love science and eventually to pursue a degree in chemistry at the University of California at San Diego. During her time at UCSD, Julia became a certified SCUBA diver and worked in a research lab studying fish physiology at the Scripps Institution of Oceanography. Julia also discovered a passion for teaching through serving as a teaching assistant and mentoring low income, first-generation college students in the Ronald McNair program at UCSD. After college, Julia continued her research and teaching at Yale University, where she earned a Ph.D. in bioorganic chemistry while studying the interactions between DNA and the proteins that begin the cellular process of transcription.

At Walker’s, Julia is passionate about engaging students in science by encouraging them to observe the environment around them and to explore how science can help them understand and improve their world. A highlight of her career was being named a National Geographic Grosvenor Teacher Fellow, which allowed her to travel on an expedition to the Arctic and to develop and teach an interdisciplinary elective course about Climate Change at Walker’s. Julia also co-developed and co-teaches Honors Scientific Research in Antibiotic Discovery, Walker’s research-based science course that guides students to search for new antibiotics in response to the worldwide antibiotic resistance crisis. In addition, she has held several administrative roles at Walker’s including Science Department Chair, Co-Dean of Faculty, and Dean of Studies.

Julia has embarked on several more educational travel experiences over the past few years: two visits to the Galapagos Islands with National Geographic, a safari to learn about climate change and sustainability in Tanzania, and an expedition to Antarctica with a cohort of female and nonbinary leaders in STEMM with Homeward Bound. She uses these experiences in the classroom to help her students to become engaged and informed citizens of the world.

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