Curated OER
Surface to Volume Ratios
Students measure the rate of diffusion and to calculate the surface area to volume ratios of varying cell sizes. The lesson is very clearly organized with a useful student worksheet provided. They perform a lab experiment which is...
Curated OER
Atom Models Through the Ages
Eighth graders explain the development of the atomic model over time. In this chemistry lesson, 8th graders research about the scientists who made a contribution to the atomic theory. They create a three-dimensional model based on their...