Have you run out of batteries in the calculator. Don't worry, from now on it will work with a couple of pencils and a few cans of soda. You do not believe it.

Experiment games for kids like Refesco's Can Calculator are a fun way to introduce boys and girls from 8 years to the scientific world.

If your child's calculator works with batteries, now is the time to show him that he can make it work with recycled material at home like a couple of pencils and some empty cans filled with salt water of soda.

Your child will learn that the calculator battery works because the chemicals in cans and in salt water interact with each other by making chemical reactions. This creates an electric current in the wires that makes the calculator work.

With this experiment your child will be introduced to the world of currents and energies, discovering that the first battery on record was manufactured by the Italian scientist Alessandro Volta, in 1800. It was called a voltaic battery, and it was composed of of blocks of metal discs separated by paper discs soaked in salt water.

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