July 01, 1999 Filed in: Demo Corner
Diana Hall, Bell High School, Nepean, Ontario
This is a very popular game I have played with my OAC physics class. It incorporates the concepts of conservation of energy and projectile motion. Read More...
June 01, 1999 Filed in: Demo Corner
James L. Hunt Physics Department, University of Guelph
The following two sound demonstrations have the virtue of being inexpensive; in fact the first one costs the teacher nothing. Although I have seen the first referred to somewhere, I do not recall seeing the second. Both demonstrations rely on the human ear's remarkable ability to distinguish changes in pitch. Read More...
March 01, 1999 Filed in: Demo Corner
John Childs, Grenville Christian College, Brockville
This is a good exercise to use after you’ve done kinematics, dynamics, and energy. We all talk about the kinetic and potential energy of roller coasters and their speeds, and the demonstration will let your students apply their critical thinking skills to this kind of situation. Be sure to have your students examine the setup and predict the outcome, before
you run the demo. The question is: “Which ball gets to the end of the ramp first?” Read More...