Have some pieces of fiber optic cable to show campers. With a strong light source, you can experiment sending a signal through the cable. Disassemble an old computer to show campers the hard drive, floppy drive, monitor, mouse, and keyboard. Have an abacus for campers to see. Try using this predecessor of the modern computer to do simple calculations.
Many common expressions use vocabulary from current technology.
Travel back in time and ask campers to imagine themselves at various times during the past century. 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.