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In fall 1983, I invented or gave three lessons (three skills for algebra, why slopes - a calculus preview, and logic - one versus two way implications). The lessons worked in class, and I used them repeatedly. I started writing in 1991 with the aim of reporting ideas through channels. But channels were closed, and I put online a dozen webpages in summer 1995. Kind website reviews in 1996, spring, led to more and more writing. Enjoy.
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