Lisa and her dog, Penny, learn the basics of mapmaking in this delightful sequel to Measuring PennyLisa's class is learning how to make maps. The teacher says they can make maps of anyplace, so Lisa starts with her bedroom. She includ...

Animal students learn about addition from the world around them.

Miss Prime and her animal students explore fractions by finding many examples in the world around them.

In Missing Math, the numbers all over town suddenly disappear. The animals can't count, use the phone, or even find out what time it is. Rulers, money, and computers have all become completely useless...Can the town's detective solve ...