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Definition The cognitive stages of development are a theory introduced by Swiss psychologist Jean Piaget, which describes how children develop thinking, reasoning, and understanding over time. According to Piaget, children progress through four distinct stages...

Definition A schema is a mental framework or structure that organizes and interprets information based on past experiences and knowledge. It acts as a template for understanding new situations, people, or objects by categorizing them into familiar patterns. Ex...

Definition Conservation is a cognitive skill where an individual understands that certain properties, such as quantity or volume, remain constant even when their appearance changes. This concept is fundamental to logical thinking and problem-solving, particula...

Overview Jean Piaget was a Swiss psychologist and philosopher known for his pioneering work in child development and education. Born in Neuchâtel, Switzerland in 1896, Piaget is widely regarded as one of the most influential figures in the history of developme...