Twelve days of Xmas and Pascal's Triangle
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Last updated 26 February 2013, created 15 December 2008, viewed 11,800
I know there are a few of these lesson plans floating about, but I( adapted them quite heavily so thought I'd make them available. Loads of ways to take this - we covered a bit of history, numerical patterns, money and inflation.
The PNC's Christmas Price Index website was great as well.