@article{beeson1990,
	author = {Michael Beeson},
	date-added = {2014-11-14 21:55:49 +0000},
	date-modified = {2014-11-14 21:56:52 +0000},
	journal = {Journal of Artificial Intelligence and Education},
	keywords = {MathXpert, Education},
	pages = {65-76},
	title = {A computerized environment for learning algebra, trigonometry, and calculus},
	volume = {1},
	year = {1990}}

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