Constructivism is a learning theory developed by psychologists including Piaget, Bruner, Vygotsky, and Dewey. It proposes that people build their understanding of concepts over time through experiences and interactions with their surroundings. By definition, constructivism involves the learner constructing much of what they learn and comprehend. As people age, their way of thinking changes through experience, making topics they previously struggled with easier to understand. In a constructivist classroom, the student explores and the teacher acts as a guide to help students reach their learning goals and become expert learners.