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Crazy Contraptions

Crazy Contraptions

Build Rube Goldberg Machines that Swoop, Spin, Stack, and Swivel with Hands-On Engineering Activities

Why use a simple hand motion to wipe your mouth when you can build a machine to do it for you? Toppling dominoes, rolling marbles, racing balloon cars, springing catapults, and whizzing zip-lines are all elements used to build Rube Goldberg machines in Crazy Contraptions: Build Rube Goldberg Machines that Swoop, Spin, Stack, and Swivel with...

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Marshes and Swamps!

Marshes and Swamps!

With 25 Science Projects for Kids

What kinds of plants and animals live in marshes and swamps? The places where land and water meet are some of the most fascinating places on earth, where a rich diversity of plants and animals make their homes. In Marshes and Swamps! With 25 Science Projects for Kids, readers ages 7 to 10 explore wetlands through hands-on...

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Explore Light and Optics!

Explore Light and Optics!

With 25 Great Projects

What is light? Why are optics important? In Explore Light and Optics! With 25 Great Projects, readers ages 7–10 discover how light works, how it shapes our world, and why we depend on it for survival. Readers learn about wave theory, sound, light, the electromagnetic spectrum, and optics. Introduces readers to major figures in the...

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Explore Soil!

Explore Soil!

With 25 Great Projects

We all know you can't eat a mud pie, but did you know that without the soil that makes up a mud pie, we wouldn't have very much real food? We wouldn't have several important medicines, either! Soil is a very important resource. We walk on it, play in it, build with it, grow our...

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Explore Honey Bees!

Explore Honey Bees!

With 25 Great Projects

What did you have for breakfast this morning? Toast, cereal, juice, and fruit? You can thank the honey bees! About one out of every three mouthfuls we eat is affected by honey bee pollination. In Explore Honey Bees! With 25 Great Projects, young readers learn about honey bee colonies, why honey bees live in hives,...

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