Dan Rohr, Three R Math software Dan Rohr was the author of three educational programs which were published by Atari Program Exchange. Three R Math System first appeared in the summer 1982 APX catalog, where it won second prize in the education category. The Three R Math Classroom Kit was available in the spring 1983 APX catalog, where it won third prize in the education category. Finally, the Three R Math Home System was first available in the summer 1983 APX catalog. This interview took place on June 13, 2016. "Fortunately, the person that rejected it took the time to critique all of his objections that he had to it. And I said, 'Hmm, this person has never been in a classroom.'" Three R Math System in the summer 1982 APX catalog Three R Math Classroom Kit in the spring 1983 APX catalog Three R Math Home System in the summer 1983 APX catalog Dan's software at AtariMania

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