For our money theme a perfect science activity is cleaning coins!
I knew we would be using money a lot for our money theme and handling clean money is a better option then dirty money that has passed through hundreds of fingers.
Cleaning money is simple and most of the supplies are already in your home.
A quarter cup of vinegar to 1 tablespoon of salt for the solution.
Let the coins soak in the solution for a bit
then take them out of the solution and wipe off the grime with a towel and watch them shine!
We did talk about the vinegar breaking down and lifting the dirt for easy wipe off. The Dragons were so excited to have a pile of their own 'real' shiny money that they didn't pay much attention to the science of it.