Respuesta :
Cognitive Development in the Teen Years
Combine (add)
Separate (subtract or divide)
Order (alphabetize and sort)
Transform objects and actions (change things, such as 5 pennies = 1 nickel)
Combine (add)
Separate (subtract or divide)
Order (alphabetize and sort)
Transform objects and actions (change things, such as 5 pennies = 1 nickel)