I Independent and Strong New member Apr 2, 2010 #1 ...stages state.? sensorimotor (Birth to 2 years old), preoperational (ages 2 to 4),concrete (ages 7 to 11), and formal (beginning at ages 11 to 15)
...stages state.? sensorimotor (Birth to 2 years old), preoperational (ages 2 to 4),concrete (ages 7 to 11), and formal (beginning at ages 11 to 15)