BetterExplained: Math Lessons That Explain Concepts
This site is a hidden gem on the internet. This guy deserves a lot more credit. I think he's doing something at the level of Khan Academy, but for seemingly simple concepts we all take for-granted.<p>An article I really enjoyed was his explanation of Quake's inverse square root method: <a href="https://web.archive.org/web/20150530232103/http://betterexplained.com/articles/understanding-quakes-fast-inverse-square-root/" rel="nofollow">https://web.archive.org/web/20150530232103/http://betterexpl...</a><p>What I also appreciate is that he admits when he doesn't understand something and doesn't pretend to give an incomplete, vague explanation and just straight up says he does't fully get it (like why the specific 'magic' number in the Quake algorithm). Thankfully he linked the original paper and I read up on it myself. But his initial explanation provided a solid background for the paper.