125 by feross | 121 comments on Hacker News.
New top story on Hacker News: An alarming trend in K-12 math education: a guest post and an open letter
An alarming trend in K-12 math education: a guest post and an open letter
125 by feross | 121 comments on Hacker News.
125 by feross | 121 comments on Hacker News.
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