Curated OER
Changing Planet: Withering Plants - Stressing Over Lost Water
Expectant earth scientists examine the bottom side of a leaf and learn the role of the stomata. They consider the gas exchange that occurs through these structures and relate how the climate is changing to its impact on food crops. This...
Curated OER
Elastic Recoil in Arteries and Veins
A lab in which high schoolers examine the difference between arteries and veins. Budding biologists will find out which blood vessel can stretch furthest, recording their data in a table then answering several questions evaluating their...
Carolina Biological Supply
Aquarium Equilibrium Demonstration
Sometimes equilibrium is a difficult concept for a beginning chemist to grasp. Here is a demonstration that helps them to visualize what is happening at a molecular level. Using two aquariums and different sizes of beakers to transfer...