This demonstration uses food and a series of containers and additives to model the process of mechanical and chemical digestion in the human (mammalian) digestive system. The demonstration begins with actual food items and ends with a paste closely resembling fecal matter. Due to the high “gross” factor, this demo is a hit with students and is guaranteed to be very memorable.
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Teacher Demo: Burning Money
Categories: Teacher Demonstration
Teachers are required to have fire safety training and permission of the employer before going forward with this demonstration. The purpose of this demonstration is to illustrate an example of an... read more
Teacher Demonstration/Student Activity: Additive Colour Theory - Spinning Colour Tops
Categories: Lab/Student Activity, Teacher Demonstration
A circular disc is made with two or more colours of the visible spectrum in equal area sectors. The disc is spun and a different colour appears. read more
Teacher Demo: The Nose vs. the Wrecking Ball
Categories: Teacher Demonstration
A pendulum is constructed from a 1.0-kg mass suspended from the ceiling, with a length of strong string long enough so that, when pulled about 40o from the vertical, the mass comes to nose level. The... read more