Grade 4

2576 records found. Displaying 1585 - 1596.

Earth and Space Science

Nuclear Power

What is nuclear power? How is splitting atoms used to make electricity for our homes? Nuclear Power answers these questions and much more! More →

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High Interest · History · Science

Nuclear Skies Ahead

An enormous boom wakes Artem from his sleep. He discovers that a reactor at the nuclear power plant in Chernobyl has exploded. With radiation everywhere, his family is forced to evacuate… More →

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High Interest

Nuclear Submariners

What does it feel like to live in a pressurized metal tube, 1000 feet (300 m) under the ocean, and only steps away from lethally dangerous nuclear fissile material? Nuclear submariners know.… More →

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Arts

Oceans and Art Activities

Art activities give young ecologists a way to express what they have learned about oceans. This book also answers such questions as why is water blue?; how do some animals in the deepest part More →

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High Interest

Ocean Survival Guide

This entertaining and informative survival guide introduces readers to the challenging environment of the ocean. Useful tips tell you how to get drinkable water, what you can - and shouldn't… More →

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Animals · Science

Odd Birds

Readers will be fascinated by this entertaining and informative series, which shines a spotlight on some of the world's oddest birds. The character Professor Oddfeather offers amusing facts… More →

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High Interest · History

Oh, the Humanity!

Josef and his family are heading home to America after visiting Josef's grandfather in Germany. Grandpa has a surprise for them. Instead of taking the boat home, they'll be riding a zeppelin… More →

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Earth and Space Science

Oil and Gas

The Babylonians and Sumerians were using thick, gooey oil as early as 5000 BC as pitch to caulk their boats and hold their building bricks in place. Oil is actually a fuel, like coal, but its More →

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History · Social Studies

Old-Time Toys

Old-Time Toys shows young readers the wonders of 19th century playthings using fascinating photographs from leading toy museums around the country. A history of toymakers in North America is… More →

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