The Celsius thermometer is

By Jerolyn Ann Nentl

A brief introduction to the Celsius thermometer and how it works.

Skydiving

By Jerolyn Ann Nentl

Bicycle motocross

By Jerolyn Ann Nentl

Describes the sport of bicycle racing, known as BMX, which has developed into a national pastime in the 1970's.

Freestyle skiing

By Jerolyn Ann Nentl

Photographs and text introduce the fundamentals of the young sport of freestyle skiing.

Surfing

By Jerolyn Ann Nentl

Skydiving

By

Grizzly!

By Ben East

A man's realization of his desire to meet face-to-face with a grizzly bear changes some of his previous ideas about them.

Roller skating

By Jerolyn Ann Nentl

Introduces the history, techniques and equipment of roller skating.

Big rigs

By Jerolyn Ann Nentl

An introduction to the big rigs, their history, how they are made and tested, their special features, and their many uses. Includes a glossary of related terms.

The caribou

By Jerolyn Ann Nentl

Describes the North American reindeer, how it lives, its eating and mating habits, and the threats to its existence.