Constructivism is a learning theory that explains how humans construct meaning from their experiences. It emphasizes that knowledge is constructed either individually or through social interactions and experiences. According to constructivism, learning depends on prior knowledge, is facilitated through social interactions, and occurs through meaningful real-world tasks. Concepts are ways of categorizing objects or events and can be represented as feature lists, prototypes, or exemplars. Effective concept learning involves providing clear definitions, examples, and opportunities for learners to identify and apply concepts on their own.