A collection of math puzzles involving simple algebra, prime numbers, and other aspects of arithmetic interspersed with line drawings.

In this clever guide, readers previously daunted by algebra, logic, algorithms, and all things math will discover they are better at it than they thought. This resource explores the math brain and demonstrates to readers that they use math skills all the time -- they just don't know it yet. Packed with math activities and puzzles.

Sir Cumference, Radius, and Sir Vertex search for Edgecalibur, the sword that King Arthur has hidden in a geometric solid.

A collection of puzzles challenging the reader to make shapes and designs out of toothpicks, coins, or buttons and then change the shapes in various ways.

Picture puzzles, games, and simple activities introduce the mathematical concepts of abstract thinking, circuitry, geometry, and topology.

Rhymes and riddles review math concepts for young readers.