Each group needs:

• tape measure
• safety glasses, one pair per student
• Magnetic Launcher Worksheet, one per student

To share with the entire class:

• 3 launchers with 30.5 turns
• 3 launchers with 40.5 turns
• 3 launchers with 50.5 turns
• Note: Magnetic launcher (coil gun pistol) kits (and assembly instructions) are available for ~$90 each from Information Unlimited at http://www.amazing1.com/ or http://www.amazing1.com/electric-guns.htm