Ages 3-5. In this level 1 MathStart book, Murphy introduces the concepts of matching sets, or one-to-one-correspondence. On a sunny beach, Turtle makes a batch of seaweed soup and invites his friends Crab, Sandpiper, Seagull, and Clam to join him for lunch. One by one, his friends come to the table, requiring Turtle to produce an additional place setting. The lunch is a success, and at the close, Turtle produces another whole pot of the savory stuff. Adults will want to read through this book be ...