We have used the Smithsonian Mega Science Lab for two other projects so far. This is Austyn's third project. See the dino dig here and the gem dig here.
We did this project over a few days. First we stuck the parts together and added the string. The string was tricky so he needed my help for that.
He then added the plaster material pieces. I just helped him to smooth it out and be sure that all of it was covered.
While he painted, Zoe painted with her paints.
I love the details he added.
We added the ingredients and... VOILA!
Here is our volcano spitting.