INTRODUCTION Jean Piaget, a Swiss psychologist and early childhood educator, made significant distributions to early childhood education developmental psychology especially in the areas of the developments of children's thought, cognition and language (Ornstein & Levine, 1993) In his studies from 1920s to mid-1930s, he examined children's conceptions of moral judgement, number, space, logic, geometry, physical reality, reasoning and conception of the world (Egan, 1983) PRINCIPLES OF LEARNING AND INSTRUCTION Piaget perceives the child as the primary agent. ... He achieves this...

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