Short videos can be a great way to introduce or review content learned in the classroom. One of the problems I always face as a teacher, though, is finding videos that are simple, clear, and adult-friendly. In my experience, websites like Khan Academy are too technical and move too quickly to be very helpful to students unless they already know the material quite well and just need a quick brush-up. On the other hand, some of the videos from other sites, such as the Amoeba Sisters, are just too juvenile to appeal to adults.
So I was thrilled to stumble upon the Stated Clearly series of videos on YouTube. These videos are generally short (3-5 minutes or so) and, true to their name, do state concepts very clearly. When it comes to science, my rule of thumb is to teach students what they really need to know, and leave out extraneous information when possible. Stated Clearly videos do just that. The content is served in bite-sized, digestible chunks, and the videos they have put out are nicely aligned with the Life Science concepts tested on HSE tests–cells, DNA, chromosomes, natural selection, evidence for evolution, photosynthesis and cellular respiration, etc.
Stated Clearly: check it out!