how-to-make-a-potato-powered-calculator

Interactive video lesson plan for: How to Make a Potato Powered Calculator

Activity overview:

Watch more How to Do Fun Tech & Science Projects videos: http://www.howcast.com/videos/271435-How-to-Make-a-Potato-Powered-Calculator

Long a science-fair project staple, this potato powered calculator is easy to recreate yourself!

Step 1: Number potatoes
Label your potatoes one and two.

Step 2: Remove battery
Remove the batteries from the calculator. Take care to note where the positive and negative terminals are within the battery compartment.

Step 3: Insert nails
Insert a nail into each potato and stick a copper wire into each potato, opposite the nail.

Tip
Alligator clips, nails, and wire can be purchased at your local hardware store.

Step 4: Connect clips
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.

Step 5: 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.

Step 6: Complete circuit
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!

Did You Know?
Did you know? Americans eat 130 pounds of potatoes per person each year.

Tagged under: calculator,potato,science

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