Knowledge construction is the active process by which individuals and groups create understanding and meaning. This concept, central to constructivist theories, investigates the mechanisms and contexts through which individuals integrate new information with existing cognitive structures and how collective understanding emerges through social interaction and negotiation. Key characteristics include its non-passive nature, dependence on prior knowledge and context, and the iterative synthesis of information and experience. Its significance lies in explaining human learning and knowledge development, informing pedagogical practices that emphasize active engagement, and analyzing the social and situated nature of knowledge claims across disciplines.