Piaget

• Piaget: nature vs nurture
• Sensorimotor stage: 0-2 years

  learn through sensors and actions

  Lacks object permance
• Pre operational stage: 2-7 years

  Create new schemas

  Can't logically think, lack conservation, still egocentric
• Concrete operational stage: 7-11 years

  Less egocentric, can conserve if they can see it

  Mental maths still need counters
• Formal operational stage: 12+ years

  Abstract thinking, problem solving, reasoning, think hypothetically, don't need visual aids