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Averaging rates: deciding when to use the harmonic or arithmetic mean. (English)
Math. Teach. (Reston) 98, No. 9, 626-630 (2005).
Summary: The article describes the harmonic mean and explores situations for using it. Activities that involve hands-on practice for students are provided. Students learn to recognize which mean, harmonic or arithmetic, is appropriate.
Classification: K44 K45
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