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Lesson Plan
Curated OER

Cell Size and Shape; Diffusion and Osmosis Processes

For Teachers 9th - 12th
Use salmon eggs as a cell model for demonstrating the movement of water over concentration gradients. Junior scientists examine the same process microscopically with an onion cell. They use a thistle tube and a semipermeable membrane to...
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Lesson Plan
Curated OER

Mechanisms to Fight Disease

For Teachers 11th - 12th
Students explain how our body fight diseases. In this biology lesson, students identify the role of bacteria and viruses in human illness. They create a PowerPoint presentation and essay at the of the unit.

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