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For 28 years, I taught general chemistry to thousands of students. I have mentored 60+ post-docs and research students, and I am particularly proud that 15 former mentees now teach chemistry at colleges and universities, while 10 more teach high school chemistry. Together we have authored more than 100 peer-reviewed articles and given more than 500 invited keynotes, seminars, and conference presentations.

My research investigates students’ learning of chemistry, with expertise in developing measures of students’ thinking in the laboratory and with multiple representations of molecules and compounds. I co-author three chemistry textbooks that feature pedagogy developed from my research, all published by W.W. Norton: two general chemistry textbooks and the first-ever AP chemistry textbook to use an atoms-focused approach.

I have been elected a Fellow of the American Chemical Society and a Fellow of the American Association for the Advancement of Science. I served on the National Research Council Committee on Discipline-Based Education Research, and I chaired the Gordon Conference on Chemistry Education Research and Practice. My colleagues honored me with the 2020 American Chemical Society (ACS) Award for Achievement in Research on Teaching and Learning of Chemistry.