Addition and subtraction are as easy as 1 + 2 = 3 in this funny and educational book by "New York Times"-bestselling author McKellar, who uses her proven math techniques to give children the solid grasp of addition and subtraction. Full color.
Addition and subtraction are as easy as 1 + 2 = 3 in this funny and educational book by "New York Times"-bestselling author McKellar, who uses her pro...
