Tamar Posner, PhD
Dr. Tamar Posner is a mathematician and educator who has pioneered the development of Creative Math® programs for K-8 and MathAction® for middle and high schools. Tamar has a proven track record of transforming young people with a wide range of math abilities and interests into confident mathematicians who use math as an integral tool for understanding their world. In fact, she has been called "The Math Whisperer" by many educators and parents. Tamar has taught students and teachers around the world, including the USA, Israel, India, Indonesia, and Japan, in both public and independent school settings. Tamar is committed to sharing her passion for math in order to develop students as critical thinkers and leaders in an increasingly complex world. She holds degrees in Mathematics and Philosophy from the Hebrew University in Jerusalem, Israel and MA and PhD in Mathematics Education in the Education for Math, Science, and Technology program (EMST) from UC Berkeley, California.
Board of Directors
Greg Bybee, MA, MBA
Greg Bybee is the VP of Marketing and Learning Products at NovoEd, an innovative online learning platform. He is passionate about making math accessible to young people and understands first hand how to use math to examine and solve global and social issues: he developed a math model to identify the spread of HIV/AIDS in Botswana, modeled using a (large) series of differential equations. Greg serves on the board of Leadership High School and volunteers at Philanthropy University. Greg brings his passions for teaching and math and well as his numerous skills in the ed tech world.
Kathleen Florita is a Program Consultant for the New Teacher Center (NTC), supporting various school districts in the Bay Area. Prior to working at NTC, Kathleen taught middle school English in San Francisco and East Palo Alto. Her experience in urban schools, serving diverse communities keeps her grounded as she works towards helping all students reach their potential by support school districts at various levels. Kathleen is passionate about people, systems, and impact. In her free time, you can often find her exploring new places, wandering through books stores, and spending quality time with her family and friends.
Marcelia Nava is the Vice President of Operations of a Jeff King & Company in San Francisco. She has over 10 years experience in managing the operations and accounting functions for small companies. Prior to a career in accounting, she was a Peace Corps volunteer in Suriname, South America, where she helped to develop a computer learning center for the local village. She has passion for enabling girls to pursue STEM careers and motivating all kids to enjoy math. Her personal experiences are what drive her to reach out and help kids understand the value of math as applied to real life. She is also an avid volunteer and traveler, and has dreams of being a math teacher one day.
Yves Petit, MS
Yves Petit is a Managing Director of Market Risk Management at Charles Schwab. Since joining Charles Schwab in 2013, he contributed to strengthening automation processes, analytics, and documentation procedures to effectively manage market risk and its impact on the firm’s investment portfolio. Prior to Schwab, he worked at PolyPaths, a fixed income software company, where he provided client support solutions ranging from financial modeling, enhancements to scripting programs, and other technical software issues. Previous to his career in the financial industry, he worked with prospective college students who were pursuing careers in math and science fields at his university’s summer academy for mathematics and science (SAMS) program. He earned his Bachelor’s and Master’s degrees in Electrical and Computer Engineering, with a minor in Computational Finance at Carnegie Mellon University.
Daniel Silva currently works as a Corrosion Engineer at Pacific Gas & Electric. In this role, he facilitates multiple corrosion related activities and manages multiple Corrosion Programs as lead engineer and subject matter expert. As a subject matter expert within the field of corrosion, Daniel has co-authored corrosion engineering papers for new and innovative technologies within this field, and presented them at various industry forums. Daniel Silva holds a Bachelor of Sciences in Mechanical Engineering which he received from the University of Nevada, Las Vegas. Prior to his current role, Daniel has also worked for Southwest Gas Corporation in Las Vegas, as well as supported the Plant Engineering group at Toyota in Ann Arbor, MI. Daniel is passionate about mathematics and education, and his technical knowledge serves as an asset for MathAction. In his free time he loves to travel and go on hikes.
Jennifer Bloom, MA
Jen Bloom is the New Teacher Center (NTC) SF Bay Area Director of Program Engagement. This is her 22nd in education and 9th year with New Teacher Center. Prior to joining NTC, Jen was a primary teacher, instructional coach, and administrator in San Francisco, East Palo Alto, and Oakland. Her passion is designing and facilitating meaningful professional learning and coaching teachers and school leaders. Jen is committed to ensuring that every child has a top quality teacher. She has presented locally and nationally on the following topics: foundations in literacy, instructional coaching, teacher leadership, and Professional Learning Communities. Jen enjoys hiking, backpacking, and reading. She also serves as a volunteer puppy raiser for Canine Companions for Independence (CCI), an organization who provides assistance dogs at no cost to people with disabilities.
BethAnn Berliner, MA, MP
As a Senior Researcher and Project Director at WestEd, BethAnn Berliner focuses on strengthening school and community-based efforts for student success. Since joining WestEd in 1991, her work has contributed to the academic, behavioral, and developmental growth of K-12 students and skills development of the adults who support them in schools and communities. Ms. Berliner's recent work focuses on dropout prevention and increasing access to postsecondary options for all students. She works with schools, state departments, universities, social service agencies, and foundations to seek better ways to close the achievement gap and increase graduation rates, recover dropouts, and strengthen alternative pathways to meet college eligibility requirements. Ms. Berliner received an MA in social history from the University of Colorado and an MPA in evaluation and policy analysis from San Francisco State University.
Sara Collina, JD
Sara Collina is an educator, curriculum developer, strategic planner and seasoned project director. Sara has a passion for helping young people understand and work within complex and dynamic systems and is currently faculty at Georgetown and George Washington Universities. For more than 16 years, Sara has worked with the National Breast Cancer Coalition (NBCC) designing educational programs that empower breast cancer advocates to understand the science of breast cancer. She has created mediation programs for a federal union, classes for Planned Parenthood, social science courses for the Washington DC homeschooling community as well as law to high school students. She has firsthand knowledge of numerous school environments; her three children attend independent, public, and homeschooling programs. Sara has a BA from Cornell University and a JD from UC Berkeley (formerly Boalt Hall) School of Law.
Beth Deane, JD
Beth Deane is Assistant General Counsel at First Solar and a seasoned environmental lawyer formerly with Paul Hastings. Beth joined the Board with a long-term passion to support meaningful education for young people. Beth served as Board Chair of an Oakland public charter school and helped move the young organization into stability. Beth has a law degree from Yale University.
Kayla Kirsch, MS, MA
Kayla Kirsch is a longtime advisor and consultant to MathAction. She is a process designer, graphic facilitator, workshop leader, and organizational development consultant who has spent over 25 years supporting nonprofit and public sector organizations. At WestEd, she served as Associate Project Director for a state‐wide school reform effort in Kentucky, and led a Systemic Reform Initiative for sharing “systems tools” to address problems facing schools and districts. Early on in her career, she received a grant to explore nontraditional K‐12 schools, in which students played an active decision‐making role in their education. As a Senior Consultant with The Grove Consultants International, Kayla works visually to “draw out people’s ideas” and develop visual maps for large‐scale change processes. Kayla has a BA in Education/Women’s Studies from Amherst College & University of Massachusetts and an MS in Organizational Behavior from the California School of Professional Psychology.
Richard Owen is Chief Product Officer at Integrate, Inc. a cloud-based marketing and advertising company based on Scottsdale, AZ. Richard served as the VP of Product Development and Technology at SquareTrade for four years, utilizing his expertise in product marketing, e-commerce, customer relationship management (CRM) - supporting 3x corporate growth in 15 months. Richard is also a co-founder of an Oakland public charter school, bringing both his vision and pragmatic skills to its continued success. Richard is trained as an engineer and received his degree at Lancaster University, UK.
Leonard Sklar, PhD
Dr. Sklar is an Assistant Professor of Geology at San Francisco State University, with a focus on Fluvial, Hillslope, and Tectonic Geomorphology; Engineering Geology; Hydrology; Ecosystem Restoration. Recent and current research questions include: How do rivers cut through bedrock to create valleys and limit the heights of mountains? How can we better manage sediment to restore aquatic ecosystems downstream of dams? How are river channels carved by liquid methane into water ice on Saturn’s frozen moon Titan? In addition to teaching courses in Geomorphology and Engineering Geology, he teaches remedial mathematics to undergraduates and recognizes the power of math as a gatekeeper to University-level work and STEM careers. Dr. Sklar received both his M.S. Civil Engineering and Ph.D. Geology from the University of California, Berkeley.