Had homeschool co-op yesterday. I was teaching the 8-12 year olds about chalk pastels this week.
I tried a project I found online about drawing with white school glue and then using it as a resist for the pastel when it was dry, and we tried it, but drying time was as issue. Another project we did was a kind of stenciling with shapes I cut out with my Cricut. The kids really seemed to enjoy it.