Our encounters with the physical world are filled with miraculous puzzles-wind appears from somewhere, heavy objects (like oil tankers) float on oceans, yet sma

Nineteenth-century developmental psychologist Jean Piaget examines the child's notions of reality and causality at various stages of development.

First published in 1997. This is Volume II of selected works of Jean Piaget which looks at his thinking on children and how their interaction and perception of