In this introduction to polygons, a triangle convinces a shapeshifter to make him a quadrilateral and later a pentagon, but discovers that where angles and sides are concerned, more isn't always better.

Born deep in the ocean, Kelp is not like the other narwhals and one day, when he spies a creature on land that looks like him, he learns why.

Humorously Uncovers the Reasons Behind Math's Dreadful Reputation and Shows us How we Can Help Prevent Our Own Children From Adopting Similar Phobic Attitudes

Hunt for shapes of all kinds on this journey through a bustling city, illustrated by four-time Caldecott Honoree Bryan Collier! From shimmering skyscrapers to fluttering kites to twinkling stars high in the sky, everyday scenes become extraordinary as a young girl walks through her neighborhood noticing exciting new shapes at every turn. Far more than a simple concept book, City Shapes is an explosion of life. Diana Murray's richly crafted yet playful verse encourages readers to discover shapes in the most surprising places, and Bryan Collier's dynamic collages add even more layers to each scene in this ode to city living.

The creative examples, simple text, and art in this series help students learn primary math concepts.

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

Text, illustrations, and suggested activities offer a common-sense approach to mathematic fundamentals for those who are slightly terrified of numbers.