Let's Reach Equilibrium
Young scholars create a research project that demonstrates the process of osmosis. They show the role water plays in balancing the concentration of solutes through osmosis in a role play activity.
8th - 9th Science 3 Views 3 Downloads
How do Hypotonic, Hypertonic, and Isotonic Solutions Affect the Water Movement of a Cell?
After removing the shell from a raw egg, cell biologists soak the egg in either a hypotonic, hypertonic, or isotonic corn syrup solution. They calculate the percent change in mass and compare it to the strength of the solution in a...
7th - 12th Science
Develop a Wellhead Protection Program
High schoolers take on the role of different small town community members to discuss ways to protect the local wellhead. A simulated committee meeting encourages them to consider how the freshwater supply is used by the different...
9th - 12th Science CCSS: Adaptable
Diffusion across a Selectively Permeable Membrane
Lab groups fill a section of dialysis tubing with glucose and starch solutions and suspend it in a water bath. They use iodine as a starch indicator and a glucose test strip to find out if either of the materials crossed the selectively...
7th - Higher Ed Science
Feedback Loops: How Nature Gets Its Rhythms
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...
5 mins 7th - 12th Science CCSS: Adaptable