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Worksheet
Curated OER

Investigating Osmosis

For Students 7th - Higher Ed
A thorough investigation of cell transport is provided when completing the assignment. The first half requires biology class members to answer questions about diffusion and osmosis with the aid of diagrams. Then they fashion an...
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Worksheet
Curated OER

Diffusion across a Selectively Permeable Membrane

For Students 7th - Higher Ed
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...
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Lesson Plan
Curated OER

Osmosis in Potato Slices

For Teachers 6th - 12th
You may find this presentation helpful in setting up the classic experiment where potato wedges are used for observing the effects of osmosis. You can view the experimental setup in the text and a lab sheet in the pictures, but you will...
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Lesson Plan
Curated OER

WET Science Lesson #5: Pass the Salt Please! (How Road Salt Affects Wetlands)

For Teachers 7th - 12th
As an anticipatory set, biologists listen to the story of Ruth Patrick, a scientist who used algae to detect water quality. They observe a demonstration of osmosis and diffusion. In their lab groups, they place Elodea stalks in...
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Lesson Plan
Curated OER

Acting Potential

For Teachers 6th - 12th
Students set up a cell membrane with the material provided by their teacher and then arrange beads properly to show how the sodium and potassium ions are arranged. They then make a model representing the axon of a neuron.