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Research on teaching the differential concept from the viewpoints of cognitive psychology. (Chinese. English summary)
J. Math. Educ. (Tianjin) 21, No. 4, 76-78 (2012).
Classification: C30 I40
1
Why sin 80x looks like sin x on some graphing calculators. (English)
Int. J. Math. Educ. Sci. Technol. 36, No. 4, 437-441 (2005).
Classification: U70 I20
2
A simple geometric construction of the harmonic mean of n variables. (English)
Math. Spectr. 37, No. 3, 109-111 (2005).
Classification: G90 M50 Reviewer: Gerd Walther (Kiel)
3
A note on the Brachistrochrone problem. (English)
Coll. Math. J. 27, No. 3, 206-212 (1996).
Classification: I44
4
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