A series of rhymes illustrates different ways to count to 100 such as by adding the ten toes of ten children or ninety-nine train cars plus one caboose.

Three friends play hide-and-seek, varying the way they count to 100 in each game: by ones, fives, tens, and twenties. Includes related activities.

This lively series of concept books is designed to encourage young children to take a closer look at the world around them. Each book explores a different theme and invites children to carry out investigations and experiments of their own.

Uses a variety of picture puzzles to teach the basic geometric concept of shape.

Trouble with her algebra homework leads Julie through a mysterious portal into the Land of Mathematics, where a zebra-like Imaginary Number and creatures representing Periodic Elements help her learn about math and chemistry in order to get home.

Illustrated riddles introduce strategies for solving a variety of math problems in using visual clues.

The same number can seem bigger or smaller depending on the size, arrangement and use of the objects being counted.