These three demos allow students to experience applications of knowledge of the digestive, respiratory, and circulatory systems by doing very short activities on themselves. They also allow the opportunity to discuss the pros and cons of using humans as test subjects. It is very useful for students to get the idea that scientific experiments do not have to be very complicated.
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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
Teacher Demo: Osmosis Across a Semi-permeable Membrane
Categories: Teacher Demonstration
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... read more
Teacher Demo: Hitting Rusty Balls
Categories: Teacher Demonstration
The thermite reaction is very exciting, but also extremely dangerous. Iron has a melting point of over 1500C and the reaction can reach temperatures of over 2000C. This reaction was once used to weld... read more