This document provides an overview of constructivism as a learning theory. It discusses key concepts such as how learning is an active process where learners construct their own meaning based on prior knowledge and experiences. It also outlines different types of constructivism such as individual and social constructivism. The document discusses the role of prior knowledge, conceptual change, and discovery learning. It provides implications of constructivism for instruction such as presenting others' ideas, emphasizing conceptual understanding, and promoting dialogue.