Penny Cleaning Science Fair Project for Eighth-Graders

Some pennies look dirty from copper oxide that forms on their surfaces.
  • Practice lab safety by wearing goggles and gloves during the experiment.

Cara Batema is a musician, teacher and writer who specializes in early childhood, special needs and psychology. Since 2010, Batema has been an active writer in the fields of education, parenting, science and health. She holds a bachelor's degree in music therapy and creative writing.