LABScI
Cell Diffusion and Permeability: The See-Thru Egg Lab
Create a model to study a microscopic phenomenon. The seventh of 12 lessons uses an egg (without its shell) to represent a cell membrane. Using different solutions, learners explore the concept of cell diffusion. They monitor...
Curated OER
Rubber Egg
Young scholars demonstrate the semi-permeability of a cell membrane. In this rubber egg lesson, students measure and record egg data, place the egg in jar with vinegar and close the lid, observe immediately and periodically for the next...
Curated OER
An Egg-cellent Osmosis Experiment
Students investigate the problem of osmosis by conducting an experiment. They use eggs with the shells dissolved to tell whether fluid can move across the membranes. The experiment provides high interest for all kinds of students to keep...
Curated OER
How do Hypotonic, Hypertonic, and Isotonic Solutions Affect the Water Movement of a Cell?
After removing the shell from a raw egg, cell biologists soak the egg in either a hypotonic, hypertonic, or isotonic corn syrup solution. They calculate the percent change in mass and compare it to the strength of the solution in a...
Curated OER
Osmosis
Young scholars explore diffusion and active transport. They observe the effects of eggs in vinegar and predict what will happen when eggs are placed in corn syrup with food coloring. Students complete worksheets which lead them to...
Curated OER
What Causes Tooth Decay
Students investigate oral hygiene. For this personal health lesson, students discover the parts of a tooth and how to best protect them from disease. Students examine the effects of acids on tooth enamel and calcium.