This is what we started with. It was so pretty I did not want to let anybody else do anything to it.
In these pictures I let the children pour the vinegar in the glass pan with baking soda and they got to see the reaction between baking soda and vinegar. They looked at it for a little bit.
In these two pictures I was letting the children touch the baking soda , the fish , and the shells . I feel it is very critical that children experience plenty of " Hands On " activities.