There are two layers to video lessons. One is related to your teaching goals. Will you show your students a video for listening, vocabulary or grammar practice? What is the language element you want them to learn? The second layer is the structure of the lesson itself. Even if you're sure you want to show a video to improve listening comprehension, it's not as simple as just pressing “play”. Each video lesson must be accompanied by its own lesson plan, and the lesson plan must be targeted to meet your teaching goals. Each video lesson plan must include: pre-viewing activities, viewing activities, and post-viewing activities. Learn more about video lessons here http://busyteacher.org/3734-english-video-lessons.html