Rhyming account of a little girl's quandary as she tries to decide what she can get with her dollar in a candy shop, toy store, deli, and pet department.

In ancient Greece, young Pythagoras discovers a special number pattern (the Pythagorean theorem) and uses it to solve problems involving right triangles.

When Zachary forgets his homework assignment, readers will be amazed at what he is able to accomplish with what he finds in his pocket. Each week he takes on a different math concept (length, width, area, perimeter) with projects that include a mobius strip, a paper frame, and a light show. Instructions for doing Zach's projects are included at the end.--