Up next in How to Do Fun Tech & Science Projects (52 videos)
Teach your children technical skills and science in fun ways with the tech and science projects in this Howcast video series.
You Will Need
- Two potatoes
- A marker
- Two pieces of heavy copper wire
- Two galvanized nails
- Three alligator clips with wires
- A low-voltage, battery-operated calculator
Label your potatoes one and two.
Remove the batteries from the calculator. Take care to note where the positive and negative terminals are within the battery compartment.
Insert a nail into each potato and stick a copper wire into each potato, opposite the nail.
Connect one alligator clip to the copper wire in potato no. 1 and attach the other end to the positive battery terminal in the calculator's compartment.
Create second connection
Clip a second alligator clip to the nail in potato no. 2, and then connect the other end to the calculator's negative battery connection.
Complete the circuit by clipping the third alligator clip to the nail in potato one and to the copper wire in potato two. Voila, a working calculator!