“…Piaget identifies the stages of cognitive development as children mature into adults. A key facet of his approach is that, through the process of adaptation, organization, and re-organization, a person develops and constructs increasingly complex structures outside of what is being transmitted by another person or educator (Boudourides, 2003). To move from one stage of development to another, one needs a "difficulty to overcome" (Doll, 1989) or unbalancing that pushes one to engage in what he called the equilibrium-disequilibrium-re-equilibrium process that is at the heart of cognitive development and learning (Doll, 1989).…”