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Grades 3-5

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Curriculum Materials

Bigger Than You Think

Not all dinosaurs were enormous like the 84-foot-long, 30-ton Apatosaurus. TheCompsognathus, for example, approximated an eight-pound chicken. Size up two others.

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Curriculum Materials

What is a Fossil?

The most common fossils are bones and teeth, but not all fossils are body parts. Explore the wide-ranging evidence of ancient life that scientists use to understand Earth's prehistoric past.

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Curriculum Materials

How Big Were Dinosaurs?

How many times would your footprint fit into that of a large dinosaur? Could all of your classmate's feet fill up the small crater? Find out with this personalized look at the 35-ton Apatosaur.

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Curriculum Materials

Grouping Dinosaurs

Dinosaurs all belong to the same group, but within that group there are many subsets—meat-eating dinosaurs, four-legged dinosaurs, and so on. Try your hand at classification with these eight dinosaur illustrations.

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Article

Squamate Fun Facts

Did you know that squamates have a third eye? Or that the Gila Monster and the Bearded Lizard are the only two known venomous lizards? Discover more interesting facts about squamates.

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Hands-on Activity

Lizards & Snakes: Alive! Coloring Book

How does a Veiled Chameleon's body resemble its environment? What colors are a Burmese Python's spots? Use what you know about squamates to bring these drawings to life.

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Activity

Science Explorations: Investigate the Giant Squid

With unblinking eyes the size of soccer balls and a body that can stretch the length of a bowling alley, the giant squid has long fascinated humans. Investigate the largest invertebrate on Earth.

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Curriculum Materials

Spectrum of Habitats

Did you know that the world's deserts keep expanding each year? Or that islands have the highest animal extinction rate—75 percent? Take a closer look at the major habitats found on Earth.

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