Originally posted Summer 2018; Updated September 2023 Some links may be affiliate links. I may make a small commission based on your purchases with no additional cost to you, thank you for your support! One of the first projects we attempted this summer was Chalk Rockets.  Sounds awesome, right? Well, in my typical fashion I crossed all of my t’s on this experiment but forgot to dot the i’s.  Let me explain… I found this activity on Growing a Jeweled Rose, their version and successes can be seen here. The idea is to make homemade chalk, load a film canister with it, add an Alka-Seltzer and blast off-messy, colorful chalk…