Individual Responses Can Be Different

What can I use in space? The three-lesson unit has groups research what man-made or natural resources would be available during space exploration or habitation. Team members think of ways that resources can be reclaimed or reused in...

Rotating through five stations, evolutionary biologists explore the question of how changes in DNA facilitate the changes in a population over time. High-quality, colorful cards of animals, skeletons, skulls, and DNA sequences can all be...

The different methods of attack that the human body uses against invaders on a cellular level are summarized here. There are detailed diagrams regarding the specializations of the immune cells, and the chemical or physical response that...

Can water really poison you? An episode of the ACS Reaction series verifies that water can be toxic in large amounts. In fact, this is the main idea of the lesson: all elements are toxic at the right dose. 

Since 2004, blood doping in cycling has dropped by 50 percent. The video opens with a narration about blood doping and then focuses on the structure of blood and how its parts work to keep the body alive. Classes learn about the...

I can get more water to stay on a penny than you can! Collaborative pairs determine the volume of liquids that can be contained on the surface of copper pennies and plastic coins. The pairs analyze their results using graphs and go on to...

Is there an answer for cancer? Your AP biologists will be inspired by this lecture on how the foods that we eat stimulate or inhibit the growth of blood vessels, which in turn, bring health or disease to the human body. Research is...

This fresh resource explores the world's fresh water: where it can be found, and how humans use it. You might be surprised at the variety of domestic uses! Short, but sweet, this feature can be followed by a class discussion using the...

For thousands of years people have observed comets as they pass through the solar system, but could there be more to these celestial bodies than meets the eye? Watch this video to learn how these objects have recently been found to...

Grizzly bears can be up to 600 pounds and require a great deal of food, especially to survive hibernation. Comprised of multiple games, the third lesson of five only uses one setup. Pupils run around a large field, sorting and collecting...