Our Team

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Kathy Perkins
As Director, Kathy oversees the project, sets new strategic directions, and still satisfies her passion for sim design and pedagogy as an active member of PhET projects. She holds a BA in physics, MA in chemistry, and PhD in atmospheric science, all from Harvard University. ... MORE
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Carl Wieman
Founder, Senior Advisor
Carl founded the PhET Interactive Simulations project in 2002 – then known as the “Physics Education Technology” project. Today, he is a senior advisor to PhET and is a Professor at Stanford University, where he actively researches PhET simulations as tools in STEM learning ... MORE

Team Members

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Issam Ali
Visiting Scholar
Development · physics
Isam is visiting the PhET group for a year and will be working on simulatio... MORE
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John Blanco
Software Developer
Development · Sim Design
John has been developing simulations for PhET since 2008 and has created si... MORE
Photo of Kathy Li
Kathy Li Dessau
Associate Director
Fundraising · Marketing · Communications
Kathy helps PhET with corporate relations, licensing, fundraising, and comm... MORE
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Michael Dubson
Physics Faculty
Sim Design · Development · Physics · College
Mike is an experienced physics teacher and an expert in undergraduate curri... MORE
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Brett Fiedler
Science Education Researcher
Research · Partnerships · Accessibility
Brett researches and designs new multimodal features for PhET simulations, ... MORE
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Jesse Greenberg
Software Developer
Development · Sim Design · Accessibility
Jesse works on porting PhET simulations to HTML5 and assists in the develop... MORE
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Jacqui Hayes
Director of Global Business Strategy
Partnerships · Sustainability · EdTech Products
Jacqui works on global business initiatives that help PhET to become a sust... MORE
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Leonora Kaldaras
Postdoctoral Researcher
chemistry · research
Leonora (Lora) holds a PhD in Education from Michigan State University and ... MORE
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Michael Kauzmann
Software Developer
Development · Website · Science
Michael joined PhET with a summer internship in 2015. Then after graduating... MORE
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Chris Klusendorf
software developer
development · sim design · website
Chris joined PhET during summer of 2018 after graduating from Colorado Coll... MORE
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Diana López
Latin America Ambassador
Physics · Teacher PD · Sim Design · Global
Diana has been collaborating with PhET since 2017 working on the design of ... MORE
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Zach Mbasu
Africa Ambassador
Math · Teacher PD · Global
Zach currently leads PhET’s Africa's strategy and regional activities. He h... MORE
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Amanda McGarry
Math Specialist
Math · Sim Design · Teacher PD · Curriculum · Website
Amanda currently leads PhET’s math sim design and teacher partnership initi... MORE
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Emily B. Moore
Director of Research and Accessibility
PI · Research · Accessibility · Teacher PD · Chemistry
Emily leads research into the design and use of PhET simulations, and the d... MORE
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Ashton Morris
Sound Designer
Audio · Accessibility · Sim Design
Ashton is a sound designer who contributes creative audio implementation at... MORE
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Liam Mulhall
Software Developer
Development · Website
Liam joined PhET in 2017 as an undergraduate student, working across PhET's... MORE
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Oliver Nix
Business Manager
Finances · Admin · Website · Communications
Oliver handles day to day operations for the project and interacts with use... MORE
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Sola Olateju
Africa STEM Specialist
Sim Design · Teacher PD · Global
Sola joined the PhET team in 2020 following various interventions aimed at ... MORE
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Jonathan Olson
Software Developer
Development · Sim Design · Website
Jonathan works on libraries like Scenery that are used for development, in ... MORE
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Robert Parson
Chemistry Faculty
Curriculum · Research · Sim Design · Chemistry
Robert joined the PhET project in 2008 after serving as the chemistry direc... MORE
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Ariel Paul
Design Expert
Physics · Sim Design · Social Media
Ariel consults on sim design teams and enjoys working on all aspects of vis... MORE
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Matt Pennington
Software Developer
Development · Website · Mobile
Matt joined the PhET team in late 2015. He works on website and mobile app... MORE
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Sam Reid
Software Developer
Development · Sim Design
Sam has been developing PhET simulations and infrastructure since 2002. He ... MORE
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Amy Rouinfar
Science Specialist
Physics · Sim Design · Teacher PD · IRB
Amy works on simulation design at PhET. In addition to leading sim design ... MORE
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Nancy Salpepi
QA Specialist
QA · Chemistry
Nancy joined the PhET team in the summer of 2021, working in quality assura... MORE
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Marla A. Schulz
Software Developer
Development · Sim Design
Marla joined PhET in 2022, building simulations as well as providing suppor... MORE
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Taliesin Smith
Accessibility Specialist
Accessibility · Research · Sim Design
Taliesin Smith joined PhET to continue research on making PhET simulations ... MORE
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Agustín Vallejo
Software Developer
development · sim design · astronomy
Agustin joined the PhET team in 2022 as a remote software developer. He is ... MORE
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Rebecca Vieyra
Associate Director of Global Initiatives
Global · Partnerships · Teacher PD · Physics
Rebecca supports PhET’s international strategy and programming. Previously,... MORE
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David Webb
Math Education Faculty
Math · Research · Curriculum · Teacher PD
David has been supporting the PhET project since 2014, and is a co-PI on th... MORE
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Kathryn Woessner
QA Team Lead
QA · Physics
Katie joined the PhET team in the summer of 2018. She works on Quality Assu... MORE

Interns/Student Assistants

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Megan Lai
QA · Graphic Design

Community Supporters

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Alex Castañeda
teacher pd
Photo of Areli
Areli García
teacher pd
Photo of Mayra
Mayra López
social media


Mariah Hermsmeyer
Graphic Arts · Consultant
Chris Malley
Software Development · Pixelzoom, Inc.
Cheryl McCutchan
Graphic Design · www.animediascience.com



Carrie Bruce
Senior Research Scientist · School of Interactive Computing - Georgia Institute of Technology
Clayton Lewis
Professor, Computer Science · University of Colorado Boulder
Jutta Treviranus
Professor / Director · Inclusive Design Research Centre, OCAD University
Bruce Walker
Professor/ Director Sonification Lab · School of Psychology and the School of Interactive Computing - Georgia Institute of Technology

Assessment & Interoperability

Cognitive and Learning Sciences Center
Assessment · Educational Testing Services, Inc.
Ido Roll
Senior Manager: Research and Evaluation · University of British Columbia
Dan Schwartz
Professor, Learning Sciences · Stanford University
Doug Stein
Chief Technology Officer · Metacog, Inc.

Math Education

Karina K. Hensberry
Assistant Professor, Math Education · University of South Florida St. Petersburg
Corinne Singleton
Evaluator · SRI International, Inc.
Ian Whitacre
Assistant Professor, Math Education · Florida State University

Physics Education

Noah Finkelstein
Professor, Physics Education Research · University of Colorado Boulder

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