Place some beans in a bowl.  Make a few caterpillars - a four caterpillar, a six caterpillar, an eight caterpillar, a ten caterpillar... (higher numbers if your child would like). Count and point to each bean as you count the caterpillar. Try to stick with even numbers, but it's OK if your child makes an 'odd number' caterpillar. Then place a crayon, or small strip of paper vertically and divide the beans, placing one bean at a time on either side of the vertical (butterfly's body)...' one for you, one for you, oh, there's more...one for you, one for you...' until the caterpillar is all used up. This way you use the caterpillar to create the butterfly wings, as the caterpillar changes into a butterfly. Turn another caterpillar into a butterfly, by essentially dividing the caterpillar and changing it into a butterfly (subconscious, playful introduction to the concept of division). Remember there are two sets of butterfly wings.