Curated OER
Cell Size and Shape; Diffusion and Osmosis Processes
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...
Curated OER
Mechanisms to Fight Disease
Students explain how our body fight diseases. For 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.