City University of New York
The World of Cells: Osmosis
This definition and explanation osmosis shows how water diffuses from regions where it is in high concentration to regions where it is in low concentration.
City University of New York
Brooklyn College: Osmosis Interactive Activity
Great activity with clear background information. Try out the lab using osmosis to calculate molecular weight.
OpenStax
Open Stax: Physics: Molecular Transport Phenomena
Learn about diffusion, osmosis, dialysis, and active transport in this college textbook. Section also includes how to calculate the rate of diffusion. Section includes problems and questions for the students to answer to ensure...
Bio Topics
Bio Topics: How Substances Get Into (And Out Of) Cells
Understand the processes that allow substances to enter and exit a cell with this interactive online worksheet. Site discusses both diffusion and osmosis.