Catherine designs math and statistics simulations at PhET Interactive Simulations. Catherine also enjoys creating and facilitating meaningful PD for K-12 math teachers with the goal of illuminating hidden mathematics in curriculum. During her 20-year tenure as a secondary mathematics instructor, she twice earned the Superintendent’s Excellence in Education award and the district’s Innovative Curriculum Award. Catherine earned her B.S. in Mathematics and B.S. in Computer Science Engineering, her M.A. in Curriculum and Instruction, and her Secondary Teaching Certificate from Michigan State University, and her Ed.D in Educational Studies with a focus in Secondary Mathematics Pedagogy from the University of Northern Colorado.