Constructivism is a theory of learning that states that individuals create their own understanding of the world through experiencing things and reflecting on those experiences. According to the theory, learning is not the passive acceptance of knowledge from others but is an active process of meaning-making. The document discusses how, according to constructivism, learners build personal interpretations of the world based on their individual experiences and interactions rather than acquiring knowledge from an external source. It also notes that mental representations developed through tasks are likely to increase efficiency in performing similar future tasks.