The volume of materials will depend on the group size, and the number of times you need to duplicate each experiment. See the individual descriptions for more details. Learning Things, Inc. Take Apart Shop. Start collecting from fellow staff members, trash facilities, schools, local businesses, appliance repair shops, swap tables, flea markets, and yard sales.
Companies upgrading their office or computer equipment are also good sources for donations.
How Things Work . A Reader's Digest Book. Dorling Kindersley Limited, London. Amazing Schemes within Your Genes . Inc. Minneapolis, MN. 1993.