AHumanInLife

Ok thanks, sorry for the one month late reply

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I agree Khan Academy had helped me, even though I don’t really need it. Khan Academy make learning fun (energy points, badges, avatars, etc). It helped me be ahead of most of the class.

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Ok thanks

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3. Null is not a subject

First, it was okay and I was doing a math question. When I was done with the question, I clicked the check button. It turned white (not the whole screen) and had a red rectangle-box thing, that sai...

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2. Technical Issues and Workarounds
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@Roudeline Milien Well I don’t really think that videos really counts because the course only shows you the things you completed and the videos are tec just there. (I used google translate)

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While I solve a problem it turns white with a red box on top saying “null is not a subject”.

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3. Null is not a subject

Yes you need to get 100% mastery to consider your course 100% completed. Hope this helps!

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2. General Khan Academy Questions
3. How do you know when you have completed a course?