With people debating the merits of Khan Academy there is no doubt a proliferation of people wanting to emulate the approach and style. And I certainly want to encourage such industry! This is a quick guide. Key takeaways: first, it took about two hours to create a five-minute video (sounds right to me). And second, "Sound quality is absolutely critical – I am not happy with the sound quality used in the screen capture in this one and having watched quite a few of these it makes such a difference."
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