Chapter 1 describes the origins of the scholarship of teaching and learning (SoTL) movement and explores the distinctions among SoTL, good teaching, and scholarly teaching. It also discusses the development of discipline-based education research (DBER) into undergraduate teaching and learning in science, technology, engineering, and mathematics (STEM) fields. Since this varies by discipline, the chapter provides some details and additional references for the origins of DBER in physics, biology, chemistry, and engineering. It then examines in more depth the distinctions between SoTL and education research in the discipline of mathematics. The chapter discusses the critical issue of how to evaluate SoTL work. It acknowledges the spectrum of possibilities for how the work is valued for tenure and promotion, and closes with a discussion of implications for junior faculty who wish to engage in SoTL.