Vac-Hand Classroom Pack
$25.45 inclusive of GST & postage
A latex glove, dry fillers and reduced air pressure deliver this amazing and thought-provoking demonstration. Insert the vacuum valve in the glove, fill with one cup of sand or seeds, tie it up and suck air from it with the pump. Now pull and stretch the fingers and amazingly they get locked into position . . . Re-do it with coarser fillers such as lentils, mustard seeds, coarse polenta, etc. to see grizzly, textured skin effects on the glove. Be warned! As the air seeps back, the hand generates peculiar, life-like sounds and movements.
Why does this happen? What does it teach about atmospheric pressure?
This kit is a great teaching aid as well as a great conversation starter about our atmosphere and its invisible fast-moving gas particles.
Available as standard kits or as classroom packs (this item). Additional pumps ($5.00) and valves ($3.50) are available. Please email us with your request.
Warning: If anyone in your classroom is latex intolerant, please ensure they do not get in contact with the gloves.