Note: See link to materials examples in the Procedure below.

Each group needs:

• 4 neodymium disk magnets
• 4 LED indicator lights
• 2 blank CDs
• 12.7 cm x 12.7 cm (5’’ x 5”) wooden board
• superglue
• 2 nuts
• bolt
• 2 washers
• 2 small washers
• metal bobbin
• enameled copper wire, 25 gauge, 5 lb, available online (Note: use this you are if wrapping your own copper coils)
• PVC piping, 10 cm in length, or a film canister (Note: this is required for wrapping copper coil)
• copper magnetic levitation coil with iron core, available online (Note: use this if you want to use premade copper coil)
• bottle cap or lid

For the entire class to share:

• markers
• construction paper

For the teacher demo:

• 0.6 m (~2 ft) of 14-gauge copper wire
• AA battery
• 2 small neodymium magnets