http://unlearningmath.com/2009/04/29/what-is-multiplication-part-x/ math as a garden, friendly and always new Tue, 20 Dec 2011 20:42:50 +0000 hourly 1 http://wordpress.com/ http://unlearningmath.com/2009/04/29/what-is-multiplication-part-x/#comment-154 Fri, 22 May 2009 15:25:40 +0000 http://unlearningmath.com/?p=1022#comment-154 [...] Alternately: Yesterday, in the supermarket, a customer dumped a whole basket full of power bars on the counter. The checkout counter person started to scan them in, one by one. After seeing about seven of them scanned, with a lot more to go, the customer piped up: “they are all the same!” The checkout person laughed and started to count them. [...]

]]> http://unlearningmath.com/2009/04/29/what-is-multiplication-part-x/#comment-146 Thu, 07 May 2009 00:26:18 +0000 http://unlearningmath.com/?p=1022#comment-146 [...] X – An excursion to the land of checkout counters, and the dipping of one toe in the controversy whether multiplication is or is not the same as repeated addition.  What if we started from repeated addition instead? [...]

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