Each group needs:

• 2 D-cell batteries
• 2 wide rubber bands
• 3 #40 light bulbs (available at most hardware stores)
• 3 light bulb holders (available most hardware stores)
• 46 in (50.2 cm) insulated wire (gauge AWG 22) (available at hardware stores)
• 1 basic switch (available at most hardware or electronics stores)
• 4 Series Circuit Building Worksheets
• 4 In a Row Math Worksheets

For the entire class to share:

• wire strippers or sandpaper (to remove insulation at wire ends)
• wire cutters
• small standard screwdriver
• masking tape

Note: Most of the materials required for this lab can be reused in numerous other electricity activities. When the batteries wear out, dispose of them at a hazardous waste disposal site.