A simple introduction to the earthworm, roundworm, flatworm, and other kinds of worms.

An introduction to the spider, an eight-legged creature, not to be confused with the six-legged insect.

The natural world comes alive for young readers with Rookie Read-About "RM" Science! With striking, full-color photos and just the right amount of text, this series immediately involves young readers as they discover intriguing facts about the fascinating world around them.

The natural world comes alive for young readers with Rookie Read-About "RM" Science! With striking, full-color photos and just the right amount of text, this series immediately involves young readers as they discover intriguing facts about the fascinating world around them.

The natural world comes alive for young readers with Rookie Read-About "RM" Science! With striking, full-color photos and just the right amount of text, this series immediately involves young readers as they discover intriguing facts about the fascinating world around them.

The natural world comes alive for young readers with Rookie Read-About "RM" Science! With striking, full-color photos and just the right amount of text, this series immediately involves young readers as they discover intriguing facts about the fascinating world around them.

Discusses baby teeth and permanent teeth, the importance and uses of teeth, and how they are used by different kinds of animals.

Describes and compares the four kinds of simple machines, levers, pulleys, wheels, and ramps.

Sometimes we call them bugs. But their real name is insects.

A simple introduction to the physical characteristics, habits, and natural environment of bears.