In an effort to make math courses more relevant and improve success rates in college math, various organizations and colleges developed a new model of math education that has come to be called "math pathways." Math pathways enable students to take different paths through the math curriculum, depending on their course of study. With math pathways, college students learn math relevant to their academic and career pursuits. While only a small fraction of workers use higher-level math, employees in many occupations need data-analysis skills and an understanding of math concepts. Rethinking math in this way requires coordination between two-year colleges and their four-year transfer partners, along with changes to state and college system policies. But for many students, multiple math pathways can remove the obstacle that algebra requirements often pose. In this report, three prominent examples of math pathways are described and research evidence on their effectiveness is reviewed: (1) Dana Center Mathematics Pathways (DCMP), developed by the Charles A. Dana Center at the University of Texas at Austin; (2) Carnegie Math Pathways, developed by the Carnegie Foundation for the Advancement of Teaching and now run by WestEd; and (3) Math pathways developed by the California Acceleration Project (CAP), a faculty-led professional development network supporting California's community colleges. [This resource is the second in a series about developmental education. The first installment is "Developmental Education: An Introduction for Policymakers" (ED582926).]