Each group needs:

• Pre-Activity Reading and Food Circuits Worksheet, one each per student
• 2 oranges
• 2 potatoes
• 2 lemons
• 2 limes
• 2 grapefruits
• 6 Styrofoam cups (more or less depending on how many liquid options are available)
• 15-20 wires with alligator clips on both ends
• 6 LED lights (an option is to buy diodes with their positive and negative ends color coded)
• 10+ pennies
• 10+ nickels
• 10+ paper clips
• 1 foot of copper wire
• 10+ galvanized nails
• clear tape
• multimeter
• safety glasses
• assorted other wires

Note: Adding other assorted materials provides additional opportunities for experimentation.

To share with the entire class

• 5 oz. (~150 ml) of bleach
• 5 oz. (~150 ml) of 4-5 types of sodas (Coke™, Sprite™, orange, Mountain Dew™, etc.)
• 5 oz. (~150 ml) of vinegar
• extra materials that did not split evenly between groups (for example, any extra fruits or potatoes)