In this demo, a polyethylene strip is charged by rubbing with wool. The strip is then used to test what happens to the flow of charge when the strip is placed in contact with a conductor (iron nail) and the materials are then moved towards a neutral object. An extension to the demo enables students to test what happens when an insulator (eraser) is used in place of the conductor (iron nail).
Written by Amanda Choi, Don Galbraith Award Winner, 2019-20, Ontario Institute for Studies in Education In this lesson, students will learn to distinguish characteristics of animals within the... read more
This demonstration allows students to experimentally determine the speed of light by heating a piece of chocolate in a microwave oven. This demonstration is best used as an enrichment activity as the... read more
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