Introduction
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In the world of Early Childhood Education, there are many theories that have helped to pave the way for what it is now. Some of these theories include Cognitive Development theories. There were many men who wanted to learn more about how a child'd intelligence and knowledge develops over time. John Dewey, Jean Piaget, and Lev Vygotsky were three of these men. By looking at their theories featuring mixed media, we can get a much better grasp on what these men had in mind when they were developing their theories that we now use in the world of education.