Nothing beats the excitment of a clay day. Comming from a school district that had 55min art blocks I was a little hesitant to believe that third graders could really build coil pots in 30mins, but kiddos love clay so we had to try. Overall, I was thrilled with the kids construction, I didn't have a single one explode in the kiln and that is almost unheard of. The 3rd graders built thier clay in one class peroid, they were dried and fired and then students glazed in one class peroid. I know kiddos went home happy with a pot they were proud of and at the end of the day that makes for a very happy art teacher.