Thing 20 is about youtube. Chances are that everyone has heard of youtube. In case you haven’t, youtube is an online video channel that allows users to upload and view videos anywhere anytime. Many celebrities have been discovered through, uploads to youtube. The trouble with youtube is that many schools internet have the website blocked because with so many uploads, they are not all appropriate. Teachertube is great way to find safe and appropriate videos in school. Nevertheless many quality educational videos are on youtube. Visual tools are a great way to access an lesson fast. I choose a video that presents a vast amount of information in a short period of time.