Many educators may or may not be familiar with the term constructivism, but probably recognize it as something to do with learning. The main tenet of constructivist learning is that people construct their own understanding of the world and in turn, their own knowledge. This ERIC Digest examines the constructivist view of learning and how it affects teaching, classroom practices, and student classroom behavior. Contents include: (1) "Constructivism in mathematics and science...A contradiction?"; (2) "The basics of constructivism(s)"; and (3) "Constructivism in the classroom". Web resources are also provided. (MVL)