Make watching YouTube videos more useful in class by using Synchtube.com. It allows you to view the video while have discussion in real-time. Imagine watch a video about magnetism and the students have questions or realizations, this could be the backchannel for them or you to discuss these questions, reflect and share. Now you are getting inside your student’s heads and learning what they understand or do not understand. This could be done with any subject, because you as the teacher ultimately need to know, DID THEY GET IT! Otherwise, you may need to think again about your purpose for your videos other than to teach.