Stuart J. Murphy believes that if math had been explained to him as a child using illustrations, he would have understood math concepts more easily. So he has come up with his own series of math storybooks (divided into three levels) with pictures by well-known children’s book illustrators. In Safari Park, a Level 3 book in this series (ages 7 and up), a boy Paul, his sister, and three cousins have 20 tickets each to spend at the newly opened Safari Park. The Tiger Wheel costs 4 tickets, the Bat Tunnel 2, and so on. How many rides can each child enjoy? This becomes even more difficult to figure out when Paul loses all of his tickets and the others must each share one ride with him. Turn to the back of this book for related activities and games.