We continued to explore sand by comparing it to clay.
What happens to sand and clay when you add water? Clay absorbs and retains water better. Sand gets wet, it can be shape, and then dries up, and goes back to being rock particles. We immediately though about sandcastles.
We wanted to use sand to create something. In this experiment we shaped sand sculptures. Sand needed a bit of help. We used a matrix made out of cornstarch and water.
Here is what they made:
Little Guy: a dragon
Big Sister: a horse (off course!)