Piaget took epistemology as the starting point and adopted the method of genetics, arguing that all knowledge of the child is generated through interaction with the environment.
As an example, consider that for children in the sensorimotor stage, teachers should try to provide a rich and stimulating environment with ample objects to play with.
Piaget believed that knowledge is a biological function that results from the actions of an individual through change.
The acquisition of physical knowledge has been equated with learning in Piaget's theory (Gruber and Voneche, 1995).
Piaget also called his view constructivism, because he firmly believed that knowledge acquisition is a process of continuous self-construction.