It can be frustrating at times to teach on-line classes, when your main instruction is HANDS ON LAB INSTRUCTION for a technical field. 
Some subject matter translates readily to an online environment, however technical fields can be challenging to create a good useable online model for, because not all students have the same access or understanding of technology in general, let Aline to the particular class of instruction. Yet, as instructors we are expected to somehow achieve the same results from F2F classes as those online, when it's hard to "show" someone that doesn't have access to equipment a video… >>>