This course introduces students to academic teaching through hands-on practice acting as a teaching assistant for a class in E2S2 that they have previously taken. Students will attend lectures, run labs or sections, prepare teaching materials, grade selected assignments, and assist in other duties as necessary (including field trips, etc.). Support will be provided by the faculty in charge of the class. An additionall-hour weekly meeting will be held by the course coordinators for all students to attend and discuss teaching strategies, challenges, and solutions.