Professor Mary Beisiegel is a PI on a joint NSF-funded project to prepare mathematics graduate teaching assistants (MGTAs) to implement teaching practices designed to improve the success of students in undergraduate mathematics courses. To this end, the ELITE PD (engaged learning, inclusive teaching, and equity professional development) project will provide MGTAs with a multi-year professional development program to help them implement evidence based teaching practices, including active learning. The professional development program includes an intensive teaching seminar and two courses focused on active learning and inclusive teaching. This approach, which provides MGTAs with extended professional development over multiple years, contrasts with the conventional practice of providing MGTA training only in their first year of graduate school. To help develop their leadership skills, experienced MGTAs will have the opportunity to serve as teaching mentors for newer peers.