http://unlearningmath.com/2009/12/18/groupings-shopping-lists-vectors-part-4/ math as a garden, friendly and always new Tue, 20 Dec 2011 20:42:50 +0000 hourly 1 http://wordpress.com/ http://unlearningmath.com/2009/12/18/groupings-shopping-lists-vectors-part-4/#comment-446 Sun, 12 Sep 2010 04:30:27 +0000 http://unlearningmath.com/?p=1347#comment-446 [...] Groupings, Shopping Lists, and Vectors – part 4 – vector addition seen as combining shopping lists or cash register receipts [...]

]]> http://unlearningmath.com/2009/12/18/groupings-shopping-lists-vectors-part-4/#comment-225 Mon, 21 Dec 2009 07:33:21 +0000 http://unlearningmath.com/?p=1347#comment-225 [...] whole vs. parts by Bert Speelpenning In this series on vectors we showed vector addition in this post, and then took a small excursion to show a surprising connection between some vector additions and [...]

]]> http://unlearningmath.com/2009/12/18/groupings-shopping-lists-vectors-part-4/#comment-223 Sun, 20 Dec 2009 01:37:25 +0000 http://unlearningmath.com/?p=1347#comment-223 [...] tags: education, math class, models, representations, whole vs. parts by Bert Speelpenning In the previous post, I introduced vector addition in terms of combining two piles of stuff, while keeping track of what [...]

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