2.3 Piaget's Stage of Development 2.3.1 Sensorimotor stage(birth to age two): o babies and young children explore their world by using their senses and their motor skills. Children begin to form concept of object permanence"and gradual progression from reflexive behavior to goal directed behavior2.3 Piaget’s Stage of Development ⚫ 2.3.1 Sensorimotor stage(birth to age two): ⚫ babies and young children explore their world by using their senses and their motor skills. Children begin to form concept of “ object permanence" and gradual progression from reflexive behavior to goal￾directed behavior