In November 2020, the National Academies of Sciences, Engineering, and Medicine convened a multi-day virtual symposium on imaging the future of undergraduate STEM education. Speakers and participants pondered the future and the past and shared their goals, priorities, and dreams for improving undergraduate STEM education. Expert speakers presented information about today's students and approaches to undergraduate STEM education, as well as the history of transformation in higher education. Thoughtful discussions explored ideas for the future, how student-centered learning experiences could be created, and what issues to consider to facilitate a successful transformation. This publication summarizes the presentation and discussion of the symposium.Table of ContentsFront Matter1 Introduction2 Goals for the Future: Changing Purposes of Undergraduate STEM Education3 Transformation in the U.S. Higher Education System4 Learning from Today's Students5 Designing for Tomorrow's Students: Creating Equitable Opportunities for Undergraduate STEM Students6 The Role of Technology7 Innovations and Strategies for Moving Forward8 Final ReflectionsReferencesAppendix A: Statement of TaskAppendix B: Symposium AgendaAppendix C: Biographical Sketches of Symposium Speakers and Moderators