Instruct: Classify a review as either positive or negative.
Query: Find something else to play with while you wait

There is not much fun in waiting for 15 minutes for crayons to melt and another 15 minutes for them to dry in the mold. The cars break apart easily after taking them out of the mold so you have to start the process all over again. At least you can make the time go by faster the second time by vacuuming up the small bits of wax off the floor from the first mold.