A biography of the Alabama black woman whose refusal to give up her seat on a bus helped establish the civil rights movement.

Introduces triangles, discussing the different types of triangles and the concept of triangle size measured in degrees.

This beginning guide to economics will have readers thinking about the purpose, and not just the value, of money. From bartering, early forms of currency, credit cards, and digital payment, here is a clear and thorough introduction to money.

Tells the story of the enslavement of the Children of Israel by the pharaoh, the coming of Moses, the ten plagues that struck Egypt, and the delivery of the Children of Israel from slavery.

Traces the life of the Yankees' star ballplayer, focusing on his character and his struggle with the terminal disease amyotrophic lateral sclerosis.

Kids use simple machines every day without realizing it. Teeth are wedges and so are knives, forks, and thumbtacks. Many toys such as slides, which are inclined planes, and seesaws, which are levers, are also simple machines. Two appealing kids and their comical cat introduce levers, wheels, pulleys, inclined planes, and more, and explain how they work. This lively introduction to physics will get kids excited about how simple machines simplify our...

A brief account of the life and accomplishments of Christopher Columbus.

Surveys the life of Benjamin Franklin, highlighting his work as an inventor and statesman.