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In this activity related to the human circulatory system (on page 10 of the PDF), learners observe the dispersion of a drop of food coloring in water, draw conclusions about the movement of dissolved

In this activity, learners investigate diffusion by creating underwater "fireworks" using food coloring, oil and water.

In this lab exercise, learners explore diffusion, cell membranes and particle size using beets and three alcohols.

This three-part lab helps learners understand the essential principles governing diffusion and osmosis.