Murphy, Stuart J.

While trying to save enough money to buy a new ice scooter, Perry the Penguin learns about managing his money and about negative numbers.

As Birdie and his friends try to locate a house that is just right for his size, readers learn about the concept of capacity.

Three young firefighters must find matching sets of buttons to complete their costumes for a parade, but should they sort them by shape, color, or size?.

Introduces simple addition through a rhyming text about animals being delivered for a merry-go-round.

An old map leads the members of the Elm Street Kids' Club to a buried time capsule.

Uses the story of a horse who strives to be unpredictable to teach children how to look at past events and make predictions about the future.

As six monsters play a wild game of musical chairs, readers learn to subtract--one chair at a time.

On a car trip to the beach, the O'Malley family children compete by playing games together.

Teaches children about multiplication by telling a story about a boy who takes care of five ducks, and how his work doubles when each duck brings home a friend.

A group of lizards are late for their big performance, until then start arriving in groups of five. Presented in simple rhyming text and illustrations and introduces the basic math concept of counting by five.