Science success! The boys and I did this fantastic “experiment” and we all loved it. It is a twist to the classic volcano experiment where you put baking soda into vinegar. With this one you have a layer of baking soda and you drop vinegar onto it. It bubbles up and makes little craters in the baking soda. You can even scoop them out if you want and they stay somewhat solid. The boys loved mixing colors and making craters. I will do this one again for sure.