Hello! I've had two pieces of advice and I was wondering what you're take is. One trainer has told me that she lets her kids "explore" materials/jobs that they have no had a lesson in. Another teacher has told me that she absolutely will not let the child touch a job they haven't had a lesson in. I see the pros in cons in each. Do you have experience trying both? What has worked best for you? How do you enforce your policy? thanks!