As you know, this is a YouTube generation. You’ve got to make it short, sweet and to the point or else you lose them. With that in mind, the lesson videos are generally 3-7 minutes long and the practice sets are 5-10 minutes long. The videos for higher level textbooks (Algebra 1 and higher) get a little longer (8-12 minutes average, and Advanced Math videos are closer to 15-25 minutes long.
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