The Styrofoam Plate Speaker activity demonstrates the relationship between electricity and magnetism in an extremely tactile way. The construction of working speakers from everyday materials, which can be used in conjunction with any item that uses a 3.5mm headphone jack, is an extremely fun and versatile demonstration of electromagnetism.

Blueprint Stats:

Cost: cost
Field: Physics
Prep Time:
Active Time: 1 hour
Level: 10-12
Mess Factor: mess
CAUTION: This activity requires the use of strong magnets.