How Small is Small?

Have you ever wondered why some people are lactose intolerant? Participants test simulated patients in a hands-on lab activity to find out! They learn about lactose intolerance by performing an experiment, analyzing data, and drawing...

Why is the weather man wrong so often? Young climatologists discover how chaos rules both weather and climate through a math-based activity. Using an iterative equation, the class examines how small day-to-day weather events total up to...

Enough talk about the Greenhouse Effect—let's actually look at it! Junior climatologists engage in a simple thermodynamics experiment on a cold winter's day to examine global warming. The activity simulates rising carbon dioxide levels...

How attractive is your intermolecular forces lesson plan? Draw your class in with an activity that includes research, presentation, and demonstrations. Chemistry scholars work together to create claims about the each intermolecular...

Now, that's some fire power! The five-page handout provides a description of the basics of how rockets work. The reading explains Newton's Laws of Motion by beginning with defining some of the important terms. The article finishes by...

The hydrogen in your body is exactly the same as the hydrogen in the sun. The video explains just how small an atom is and offers comparisons, such as the one above, to help facilitate understanding. It also presents the current model of...

We all do it ... why not have a better understanding of the process? Life science scholars discover how the colorful foods we eat are either brown or yellow when our bodies have finished with them. The narrator leads the tour through the...

Who was Lorenzo Romano Amedeo Carlo Avogadro? He was the guy who suggested that equal volumes of gases at the same temperature and pressure should contain equal numbers of molecules. This eventually led to a new quantity for the number...

Ever wonder what the villi in the small intestine do? I bet your class would love to find out. Mesh netting is used to represent small blood vessels on the outside of the intestine, and a chenille bath mat is used to represent the villi...

Teams learn about the size of a nanometer by measuring objects and converting those measurements. A worksheet then tests the groups' abilities to use nanometers by having them determine the size of objects that are too small to measure.