What is Cognitive Development? Cognitive Development is the process of remembering, problem solving, and decision making from childhood through adolescence to adulthood. Piaget had a broad theory about the development of human intelligence and nature. Children build perception of the world that is centered around them, then they will experience different differences between what they have known from the past and what they find out from there surroundings through doing things. Operative intelligence frames how the world should be and it changes if the understanding of it is not successful. There is five processes you can use to build children’s knowledge of the world including not only schemas, organization, equilibrium, accommodation, assimilation. Schemas are a illustration that is linked with mental representations that help children organize knowledge. For example,