Soap, suds, and cell membranes. Pupils create a model of a cell membrane by using soap films. They experiment with trying to pass different objects through the film without popping it. Using a tube, they create a passageway through the bubble, which allows any object to traverse to the other side of the film.

Concepts

cell membranes, membranes, semipermeable membranes, the plasma membrane, cell structure, soap

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Additional Tags

science

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Instructional Ideas

• Since this is a model be sure the class members understand its limitations
• Use along with How Does Soap Inactivate Coronaviruses to show the demonstrations

Classroom Considerations

• It is beneficial if the class understands how a cell membrane works to allow molecules to move across them

Pros

• Provides suggestions for extensions
• Includes information about teaching tips

Cons

• None