Saving money?

AA batteries in on our standard weekly grocery list, much like milk and fruit, for our countless gadgets requiring battery power. So the question for science this week was: Can we make our own batteries? Are nickles better than quarters, does more coins equal greater power, does water work as well as vinegar?

Armed with lose changes, various liquids and potentiometer, Lukas and Noah set out to create some power. There was a moment, when in their minds, this seemed to be the perfect solution to the 'we are out of AA battery' mantra, only to realize that it does take a bit more than a few coins to make a stable, long running battery.

However, they had fun,  and the learning is lasting - good batteries are worth the cost.

We are off to get more Duracells!