Learn how several baby animals are the same in many ways, yet also different. Interesting facts and colorful photographs help the reader to compare and contrast.

Introduces the facts about volcanoes, what they are, why and how they erupt, different types of volcanoes found around the world, and the effects of some famous eruptions of the twentieth century.

Presents a variety of large machines that cut, carry, and move things, including combines, tub grinders, tower cranes, and offshore oil rigs.

A simple introduction to the nine planets of our solar system.

An introduction to the physical characteristics, habits, and characteristics of different kinds of bears.

An introduction to the physical characteristics and behavior of various kinds of sharks.

Knights had to be very strong just to walk around - they were wearing armor that weighed 50 pounds or more. Castles weren't just palaces - they were fortresses and prisons. Charge into KNIGHTS AND CASTLES to find out more!