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sixes_and_sevens comments on How many of you doing Khan Academy? - Less Wrong
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So you don't use Khan Academy in a systematic manner?
Depends on what you mean by "a systematic manner". If there's a large subject I want to go through, I'll start where I think I'm already up to, work my way through the videos one by one, skip topics I'm already happy with, and continue along those lines until I'm satisfied. If there's a small subject I want to go over, I'll identify the appropriate videos and watch them all.
It wouldn't be a productive use of my time to go through every single Khan Academy video one by one, as I'm already most of the way through a maths-heavy undergrad degree.
Well, I meant doing the exercises. I don't spent much of my time on the videos because either I already know it or I figured out either with the hints or without. Then, it's smooth sailing the rest of the way.
The exercises aren't that in-depth. They only really go up to introductory differentiation. It's clear that the focus of the assessment exercises is a secondary/high school target, and there's a lot of video content pitched at an undergrad level which is completely unassessed.