The Back Page: My Favorite Lesson: What's the Difference?

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A short, easy lesson to introduce standard deviation involves calculator use and pencil and paper computation.

Contributor Notes

Joyce M. Meredith,, had a career in aerospace and civil engineering before earning a master's degree in counselor education from the University of Colorado. She has a private practice in Aspen, Colorado, tutoring mathematics and science and researching how students think about mathematics.

(Corresponding author is Meredith
The Mathematics Teacher
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