Helen J. Challand's Books

Vanishing Forests

By: Helen J. Challand

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Vanishing Forests

By: Helen J. Challand

Describes the major types of forests on Earth, their current status, and the environmental problems they face.

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Page Count

132

Publisher

Children's Press(CT)

Published Date

ISBN 10

0516055054

ISBN 13

9780516055053

Disappearing Wetlands

By: Helen J. Challand

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Disappearing Wetlands

By: Helen J. Challand

Examines the ecological role of wetlands and discusses how they are formed, what life they support, and how people modify or destroy them.

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Page Count

134

Publisher

Children's Press(CT)

Published Date

ISBN 10

0516055119

ISBN 13

9780516055114

Experiments with Electricity

By: Helen J. Challand

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Children's Press is pleased to introduce True Books for a new generation Completely redesigned for today's young, investigative reader, True Books are an indispensable addition to any collection. Each book guides the reader through the facts that nurture their need to know.The new, dynamic True Books design features: -- an inviting and interactive page format -- a readable and attractive typeface -- large, bold, and brilliant full-color photographsThe True Books series takes the young reader beyond the standard, fact-filled text by adding avenues for further discovery. Each book includes a variety of sidebars, highlighting extra facts that will fascinate children. In the Important Words section, young readers will find a glossary of words that will both challenge and expand their vocabulary. Each book includes a To Find Out More section, where every curious reader can find a list of related books to read and organizations to contact.True Books also point readers to the vast electronic universe of information on the Internet. Each book will list: -- e-mail addresses to help the reader contact individuals and organizations -- appropriate newsgroups and mailing lists -- FTP sites to download fun and useful softwareBegun in the 1950s, True Books are universally embraced as the definitive nonfiction series for young readers. Now in its third incarnation, the True Books series has once again evolved to meet the needs and tastes of modern readers and educators.

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Children's Press

Published Date

ISBN 10

0516412760

ISBN 13

9780516412764

Plants Without Seeds

By: Helen J. Challand

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Plants Without Seeds

By: Helen J. Challand

Examines the characteristics of simple plants that do not have seeds, including algae, fungi, lichen, mosses, and ferns, with a brief look at bacteria.

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Children's Press(CT)

Published Date

ISBN 10

051601286X

ISBN 13

9780516012865

Activities in the life sciences

By: Helen J. Challand

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Activities in the life sciences

By: Helen J. Challand

Presents a variety of experiments involving living organisms, including growing bacterial cultures, calculating the rate of seed germination, regenerating animals, and using urinalysis techniques.

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Children's Press

Published Date

ISBN 10

0516005073

ISBN 13

9780516005072

Experiments with Chemistry

By: Helen J. Challand

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Experiments with Chemistry

By: Helen J. Challand

A brief introduction to chemistry, discussing atoms, molecules, the periodic chart, chemical changes, and states of a matter. Includes simple experiments.

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Publisher

Children's Press

Published Date

ISBN 10

0516411519

ISBN 13

9780516411514

Book's by Helen J. Challand

Vanishing Forests

Vanishing Forests

Disappearing Wetlands

Disappearing Wetlands

Experiments with Electricity

Experiments with Electricity

Plants Without Seeds

Plants Without Seeds

Activities in the life sciences

Activities in the life sciences

Experiments with Chemistry

Experiments with Chemistry

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