Just For Fun Friday

Each Friday, I'm going to post a picture I took that week that makes me smile - or laugh - or say 'Hmmmmm.' These won't be the most amazing pictures, just a warning!

We found this fun project online. The bottom layer is water with blue food coloring. The yellow stuff is vegetable oil. It's pretty difficult to describe molecular attributes and density to a 4-year-old, but he can understand that oil and water don't mix.