Air Pressure Bar Dramatically Shows Air Pressure. "The kids find it amazing....you have to try it yourself to believe it" S. B. - London Ont. $78.00
	Inverse Square Law DemonstratorTM Demonstrates how area changes with distance and that the intensity of light, gravity, and all forces decrease with distance. $75.00
	Hot Plate WatcherTM $89.00
	Goggles Watcher Mountable or Portable storage and security system. $125.00
	Magnet WatcherTM $89.00
	Thermo Watcher Security, Storage, and Transport System. "It's permanently attached to the wall in my lab & the kids use it when necessary ... it's just great " - R.B. - Science Head $85.00
	Ray Box Assessories - REPLACEMENT METAL CASE $39.95
	Ray Box Assessories - ADJUSTABLE PLANE MIRROR HOLDER $3.95
	Ray Box Accessories TM - PLANE MIRROR $4.95
	Ray Box Accessories TM - METAL REPLACEMENT SLIT PLATE $3.95
	Miscellaneous Watchers No Price
	Computer Simulated Study of Waves Just hand out the sheets and turn on the video. $95.00
	Alligator Leads Watcher TM Student explaining to the teacher: "I used the long wires to prevent the short circuit." $95.00
	Intermediate Physics Workbook - Part 1 - Mechanics - Revised $3.95
	Intermediate Physics WorkbookTM - Part 2 - Light & Sound Are your physics students meeting with the success you expect?Are your physics students meeting with the success you expect? $3.95
	Intermediate Physics WorkbookTM - Part 1 - Mechanics - Revised - Solution Book $19.95
	Intermediate Physics WorkbookTM - Part 2 - Light & Sound - Solution Book $19.95

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Common Cents Services Ltd.
18931-92 Ave
Edmonton, AB  T5T 5R1
phone: (780) 444-7330
fax: (780) 444-7343
toll free: 1-866-344-7330