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Grade 1 - 3

1453 records found. Displaying 1417 - 1428.

Science

Why Air Is Important

Air is essential for all living things on Earth. It provides the oxygen we need to breathe. Air affects the weather and nature, and can be used as a source of clean, renewable energy. But air More →

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Animals

Why and where are animals endangered?

Animals are endangered in many kinds of habitats and for different reasons. This intriguing book looks at why some animals have become endangered due to changes in their habitat. Examples… More →

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Early Readers

Why Can't I Sleep?

Ajun's book on bears says he should be sleeping all through winter. That's funny. He never has before, but he'll give it a try. So why can't he sleep? More →

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Animals

Why do animals become extinct?

Animals have become extinct for many reasons. The most famous example, the extinction of the dinosaurs, may have been the result of an asteroid hitting Earth or an Ice Age freezing them to… More →

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Science

Why do animals migrate?

Autumn is the time that many birds fly to places with warmer climates. Spring signals their return trip. Many birds migrate to keep warm and to find food that is not available in their winter More →

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Why Doesn't the Moon Fall Out of the Sky?

How can a plane fly upside down? Why aren't there any super-giant humans? Why doesn't the Moon fall out of the sky? answers all these intriguing questions about the science of forces, and much more. More →

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Health

Why Do I Bleed?

Want to know how arteries carry oxygen-rich blood throughout our bodies and what blood type means? Fun illustrations and entertaining text help give kids a clear understanding of the blood… More →

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Health

Why Do I Drool?

Want to know why you drool on your pillow or what your taste buds are for? Fun illustrations and entertaining text help give kids a clear understanding of the form and function of the mouth,… More →

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Health

Why Do I Grow?

Want to know how bones, fingernails, and hair form and grow throughout our lives? Fun illustrations and entertaining text help give kids a clear understanding of how our bodies grow and… More →

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