Drying a Tray with a Sponge

I saw this work at O's school, and I knew it would be a fun one for us to have at home.
To do this work, E shakes water from a bottle onto a tray. She then dries the water with a sponge. E LOVES it! She did it over and over and over and over...

We talked about the concepts of wet and dry while we did this activity.

The bottle is a salt shaker from Dollar General. Don't make the mistake (like I did!) of putting too much water in the bottle...you only need a very small amount.