Piaget's stages of cognitive development (video) | Khan Academy
https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/cognition-lesson/v/piagets-stages-of-cognitive-development
WebPiaget's cognitive development theory outlines four stages: sensorimotor, preoperational, concrete operational, and formal operational. Each stage, occurring at different ages, represents unique ways children understand and interact with the world. Key concepts include object permanence, symbolic thinking, conservation, and abstract reasoning.
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