Cognitive development can simply be defined as the structured growth of mind. The process begins before birth. Once a child is born this embodiment of a new generation is subsumed within the old, receiving and absorbing the past and present knowledge of its culture. The child learns facts, ideas, beliefs and behaviours. The production and use of signs, symbols and artefacts become part of the child's repertoire of individual and social accomplishments. How does this happen? Yes, the child learns systematically ...