Gradually he pieced together a "blueprint" for normal cognitive development in children ... the toy still existed. Piaget found four major developmental stages (with many subdivisions).

Trying to keep up with your child's development - and what's best for ... some skills develop in children much earlier than Piaget's stages suggests. This is partly down to the limitations of ...

Jean Piaget's ideas about child development continue to influence pedagogical practices around the world. His pioneering work revolutionized our understanding of how children learn and think.