Jean Piaget - The Theory of Cognitive Development

The Psychology of Intelligence: https://amzn.to/2MRpLmP

The Child's Conception of the World: https://amzn.to/2PaUSXR

The Psychology Of The Child: https://amzn.to/2BYt9rG

Play, Dreams and Imitation in Childhood: https://amzn.to/2PgnuPy

The Moral Judgement of the Child: https://amzn.to/2Pg2Lv8 ... https://www.youtube.com/watch?v=DlGSKkLPV3E