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If a video is being prepared as a teaching resource then (just like for any other lesson), dedicated planning (specifically for a video educational lesson) needs to take place. A key initial step is to consider what the video is to be used for. Is the video a revision of a presented session? Is it intended to enrich a given session? Is it for students to watch at home or in class? Is it a dedicated stand-alone resource? Each of these considerations comes with its own challenges and requirements. If the video is for revision, the production could be relatively short, focusing on key points as opposed to a video recording of the same session students have already attended. Whereas if the video is a stand-alone presentation, the topic may need to be covered in more depth, with opportunities taken to enrich the environment through actively increasing student engagement.