When my pre-school daughter discovered that Big Sister was learning subtraction and division, she had to learn these neat things too. Wanting to make things easier for her, I pulled out the chocolate chips & showed her all about division and subtraction. (we grouped 3's and 5's for division & then subtracted into our mouths)

When you are teaching math to your far-too-smart-for-her-own-good preschool daughter the chocolate chips consumed in the process have no calories.