Constructionism is a learning theory developed by Seymour Papert based on constructivism. It supports student-centered, active, and experiential learning where students construct new knowledge by applying what they already know to build, solve problems, or create something new. The educator acts as a facilitator rather than directly imparting knowledge, allowing students to discover concepts through problem-based learning activities where they construct meaningful products. Papert himself said learning is most effective when it involves reconstructing knowledge through active participation in constructing something.