Arithmetic by Paul Lockhart

Author:Paul Lockhart [Lockhart, Paul]
Language: eng
Format: epub, pdf
Tags: Mathematics, Arithmetic, Counting & Numeration, History & Philosophy, education, Teaching Methods & Materials
ISBN: 9780674237513
Google: Vcf4DwAAQBAJ
Publisher: Harvard University Press
Published: 2019-07-15T00:17:25.005522+00:00

This leaves us with to distribute. Not having five of anything, it’s time to do some arithmetic in the form of cashing in, rearranging the form of the number to make it easier to work with. Cashing in each coin in exchange for ten coins, we get a total of twenty-one ’s to spread among the five piles. Here is an opportunity to either be clever (e.g., by noticing that twenty is four fives and therefore also five fours) or prosaic (eeny-meeny until you’re done). Either way, our piles now look like this:

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