Constructivism is a theory that posits that individuals generate knowledge and meaning from interactions between their experiences and ideas. It emphasizes that people actively construct their own understanding and knowledge of the world through experiences and reflections. Key figures in the development of constructivism include Piaget, Vygotsky, Dewey, and Bruner. Constructivism differs from traditional education by emphasizing big concepts, student questions, interactive and collaborative learning, and assessment of process over product. In constructivism classrooms, students take an active and reflective role in inquiry-based and collaborative learning activities to construct new knowledge based on their prior experiences. The advantages include more meaningful and enjoyable learning as well as improved social and thinking skills, while the