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many areas of application, as to be unsuitable.  This talk presents two \
somewhat circumscribed introductions\[LongDash]Hero's method for estimating \
square roots and rigid motions of the plane\[LongDash]that we have used with \
college math students; these topics have minimal mathematical prerequisites.  \
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studying cognitive and pedagogical issues of using computer programming to \
teach mathematics.  He has published articles on topological dynamics and \
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