271435 1728 Technology Science & Technology Projects true Tue, 27 Oct 2009 11:33:55 -0700 calculator,potato,science How To Make a Potato Powered Calculator http://www.howcast.com/videos/271435-How-To-Make-a-Potato-Powered-Calculator http://www.howcast.com/videos/271435-How-To-Make-a-Potato-Powered-Calculator/edit approved 0 Annette_Stierwalt http://img.howcast.com/images/icons/howto-xxlarge.png 24 101978 1 0 Step Number potatoes Label your potatoes one and two.

]]> 101979 2 0 Step Remove battery Remove the batteries from the calculator. Take care to note where the positive and negative terminals are within the battery compartment.

]]> 101980 3 0 Step Insert nails Insert a nail into each potato and stick a copper wire into each potato, opposite the nail.

]]> 101981 4 0 Tip Alligator clips, nails, and wire can be purchased at your local hardware store.

]]> 101982 5 0 Step 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.

]]> 101983 6 0 Step 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.

]]> 101984 7 0 Step 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!

]]> 101985 8 0 Fact Did you know? Americans eat 130 pounds of potatoes per person each year.

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