"Making" sidewalk chalk with my 3 year old seemed like a stupendous idea... till the plaster started hardening!!!
What you'll need to get your chalk on!
FYI ~ Once the Plaster of Paris starts to set you have to work faster than the speed of light! Pink and yellow didn't make it to the silicone mold! But no worries, we popped them out of the plastic cups and used them anyway!