Osmosis, the movement of a solvent (usually water) across a semi-permeable membrane from an area of higher solvent concentration to an area of lower solvent concentration, is key in the maintenance of homeostasis. This demo shows osmosis across a semi-permeable membrane.
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Guidelines for Constructive Demonstrations/Activities
Categories: Lab/Student Activity, Teacher Demonstration
The demonstrations/activities in this resource have been designed to challenge students' thinking as well as initiate lively classroom discussions that support constructivist learning. These short... read more
Teacher Demo/Student Activity: Red Cabbage Indicator
Categories: Lab/Student Activity, Teacher Demonstration
This demonstration illustrates the presence and importance of chemistry in everyday objects, including our food. It is an interesting way to start the discussion of acids and bases or to connect... read more
Teacher Demo: Greenhouse Effect
Categories: Teacher Demonstration
This demo demonstrates the greenhouse effect by comparing the air temperature of a room with the air temperature inside a clear plastic bag containing black construction paper. The bag models the... read more