I filled a baking pan with baking soda and gave the girls 3 glasses with colored vinegar. I also gave them a spray bottle with colored vinegar, a couple of glasses, and a couple of pippettes. Then the fun began!
They pretended to make make baking soda and vinegar milkshakes...yum!
They loved this activity so much, and they would have played with it for hours if we hadn't run out of baking soda. This is definitely one of those "why didn't I think of that???" activities (since making baking soda and vinegar volcanoes is one of our regular activities!).