Each group needs:

• 1 battery (1.5 or 6 V)
• 1 light bulb in a light bulb holder; 1.5 or 6 V, to match the battery; available at Radio Shack or other electronics shops or websites
• (optional) 1 piece of wood, ~5 x 15 cm (2 x 6 inches), any thickness, on which to mount the light bulb holder for stability
• 1 meter (3 ft) of insulated copper wire in 30 cm (1 ft) sections), or 3 alligator clips
• 1 thick rubber band
• 2 large paper clips
• 2 pencils with eraser tips
• 2 clean-head, metal thumbtacks
• Conductivity Testing Worksheet, one per team
• an assortment of several objects to be tested as conductors or insulators, such as aluminum foil, paper, glass, copper, plastic, salt water, etc.