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REFLECTIONS

I love it when students surprise me. I recently worked with a group that appeared to believe that area and perimeter are related (if you increase one, you increase the other). I tried to help them realise that this is incorrect by introducing a counterexample: "Look at this sandwich". 1 to...

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Veröffentlicht in:Mathematics teaching 2007-01 (200), p.2
1. Verfasser: Swan, Malcolm
Format: Artikel
Sprache:eng
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Zusammenfassung:I love it when students surprise me. I recently worked with a group that appeared to believe that area and perimeter are related (if you increase one, you increase the other). I tried to help them realise that this is incorrect by introducing a counterexample: "Look at this sandwich". 1 took a bite out of one side. "What has happened to its area?" "It has gone down."
ISSN:0025-5785