I remember in grade school maybe in Mrs. Calvert's class we played with Oobleck (cornstarch and water) and of course we loved our dinosaur week volcanos with baking soda and vinegar.
So why not play with both!
First I mixed 1 part baking soda and 1 part cornstarch and then added water until smooth.
Then I filled two small containers with vinegar and few drops of food coloring and headed to the dining room table.
At first we left the lids on the vinegar cups and just played with the liquid/solid mix oobleck mix!
Then the lids came off!
That was fun for a while....and then the DUMPING started!
About 45 minutes later and after adding more vinegar three times, Karl cleaned up the mess and Evin was off to play with some trucks and tractors!