Team-based learning (TBL) may rely on small group interaction more heavily than any other commonly used instructional strategy in postsecondary education. This conclusion is based on three facts: (1) Group work with TBL is central to exposing students to and improving their ability to apply course content; (2) Majority of class time with TBL is used for group work; and (3) Courses taught with TBL typically involve multiple group assignments are designed to improve learning and promote development of self-managed learning teams. The authors begin with a brief overview of TBL, discuss the four essential elements of TBL and walk through the steps required to implement them. To conclude, they examine some of the benefits that students, administrators, and faculty can expect from a successful implementation of TBL. (Contains 3 figures.)