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.
Related Resources:
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: Invisible Ink
Categories: Teacher Demonstration
In this demonstration, a chemical reaction is used to make a hidden message visible. The demonstration illustrates an entertaining application of chemical reactions in toys and everyday objects. It... read more
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
