Constructivism is an active learning theory that maintains learning occurs when learners actively construct knowledge by working to solve realistic problems. Key aspects include: learning is social and active; learners construct their own understanding; new knowledge builds on prior knowledge. Constructivism sees the learner as responsible for knowledge construction through experience and reflection. It emphasizes problem-solving and critical thinking to synthesize information for real-world application. Technology supports constructivist principles by providing authentic problems and opportunities for knowledge building. Major scholars developed models emphasizing experiential learning, problem-based learning, cognitive apprenticeships, and scaffolding support. Research shows constructivist teaching correlates with increased technology use and improved student outcomes like problem-solving abilities.