Grades 6-8

Mapping the Classoom

Classroom Activity

Mapping the Classoom

What's the size of your desk in relation to your teacher's? Or to the chalkboard at the front of the room? Hone your mapping skills with this classroom activity.

Isolation and Mate Choice

Educator Guide

Isolation and Mate Choice

This discussion explores how artificial boundaries can decrease mate choice, with a specific example of highways limiting mate choice for bighorn sheep.

Chesapeake Bay Before

Lesson Plan, Educator Guide

Chesapeake Bay Before

This worksheet prepares students to compare this historic food web of the Chesapeake Bay to the food web of the present day.

Horse Power (Science World)

Article

Horse Power (Science World)

Some scientists believe the fate of humankind was changed when humans first began to tame the wild horse. Learn more about how horses have shaped our world.

Bigger Than You Think

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.

Squamate Fun Facts

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.

Science Explorations: Investigate the Giant Squid

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.

Spectrum of Habitats

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.

Science Explorations: Journey Into Space

Activity

Science Explorations: Journey Into Space

Gravity helps form the stars and planets and helps keep them in orbit. Yet, it can also cause these objects to collide. Explore the many ways gravity shapes—and reshapes—the universe.

Leaf Shape

Diagram

Leaf Shape

More than likely with a good guess you could detect a heart-shaped leaf from one that's oval or narrow. But do you know how to recognize a leaf that has a lobed or divided shape? Learn how. 

Parts of a Flower

Diagram

Parts of a Flower

Go beyond petals and leaves! Learn how to identify a flower's stamen, anther, filament, stigma, and more with this illustrated look at the parts of a flower. 

Who Owns These Bones?

Activity

Who Owns These Bones?

What can scientists know about a creature by examining its bones? And what can they only guess at? Show students with this hands-on activity. 

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