This one-cent piece from 1974 is perfectly normal-except for one thing.
Grade Range: 1-6
Resource Type(s): Lessons & Activities
Duration: 20 minutes
Date Posted: 9/4/2012
Try this experiment to find out why some liquids polish pennies better than others. This activity from Spark!Lab includes step-by-step directions, a worksheet for documenting the experiment, discussion questions, and ideas for extending your learning. Spark!Lab activities encourage young learners to explore the invention process, from creative ideas all the way to successful marketing.