Sea Sums Author:Joy N. Hulme, Carol Schwartz (Illustrator) With an appealing abundance of plants and animals, the shallows of an ocean coral reef offer a natural background for an under-the-sea arithmetic party. Creatures from stingrays to clams, crabs to sea urchins, and more disappear and reappear to provide young mathematicians with a fascinating array of equations--and a mini ecology lesson about li... more »fe on a coral reef. Full color.« less