Where are the old physics videos?

So I was watching a few videos in the Physics Library, when I saw that some videos seemed older. They did not seem in continuation, so where are the ones which are missing? Sure, the old videos hav...

1. Közösség
2. Content Requests and Feedback

Watching Videos in Faster Playback speed

So I thought that watching videos from Khan Academy in a faster Playback speed would be better as it will let you study faster. I already have experience with this as I watch Anime in between 3 - 4...

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2. Classroom Tips and Tricks