(From attached PDF summary) Session 1: In this talk, I will address two aspects of undergraduate mathematics courses for future elementary teachers. 1. What do these courses look like? That is, who teaches them, what is the content, how are courses organized, how do they differ across institutions, etc. 2. What systematic factors explain differences in learning across these courses, with different instructors and at different institutions? Session 2: The Teacher Education and Development Study in Mathematics collected data from approximately 24,000 future primary and secondary mathematics teachers in 17 countries. We will present findings and discuss implications for mathematics teacher preparation in the U.S.