Rates and Causes of Mortality in Classroom and Wild Monarch Larvae

Get young biologists' hearts pumping with this invigorating experiment on homeostasis. Working in small groups, one student performs jumping jacks for eight minutes while the other group members regularly record the person's vital signs,...

What is the relationship among the heart, circulation, and exercise? Your class members will explore first-hand how different physical exercises affect an individual's heart rate. They will begin by learning how to measure their own...

Through watching several classic air pressure demonstrations, middle schoolers determine that high pressure areas move toward lower pressure areas, heated air causes a drop in pressure, and forces exist when pressures are unequal. By...

Help build young scholars' understanding of living things with the tools provided in this comprehensive life science resource. Including a total of nine lessons that cover topics ranging from plant and animal life cycles to heredity and...

More than 90 percent of chemical products are made using a catalyst. Lesson demonstrates the way a catalyst changes the rate of reaction without altering the chemical reaction. A catalyst doesn't appear as a reactant or a product, yet it...

Explore the role of feedback loops in maintaining nature's delicate balance with this short science video. Introducing the concepts of positive and negative feedback, multiple examples are presented that explore the intricate web of...

Ever find yourself looking at a clear blue sky and notice something that seems to be floating across your eye? Well, you're not alone. Watch this short video to find out exactly what causes this and other common visual phenomenon.

What happens in the Arctic doesn't always stay in the Arctic. Follow along with this short video as it investigates how small changes in the temperature of Arctic regions can have dramatic effects on the global climate through a series...

What is the root of the conflict between ranchers and environmentalists? Middle schoolers write their impressions of what an environmentalist is and does. They read the New York Times article "In New Wild West, It's Cowboys vs. Radical...

By watching this droll and delightful animation, physical scientists consider what happens when molecules collide. In this film, however, parodic people bump into each other, exchanging limbs in the process, just as molecules might trade...