I believe that for most instructors, developing open questions is an intimidating task, especially for those of us who are involved in trades where the requisite knowledge is highly intense and goes deep into theory. For a while I had constricted myself to closed questions as a barometer for success but, in reality open questions are a much better metric. If our job as instructors is not to provide information but provide the pathway to information, then open questions are ultimately what we are looking for our students to answer. If they can come across answers by themselves (i.e: Why are receptacles required in bathroom's and kitchen's required to be protected by GFCI protected) you will find that all precedent lessons were not in vain.
