median
don steward
mathematics teaching 10 ~ 16

Wednesday, 22 February 2017

new £1 coin

a new £1 coin is due to be introduced on 28th March 2017
it's a dodecagon
the powerpoint is here
thanks for the insights of Birmingham University ITT students (21st Feb 2017)






thanks to David Wells, 'curious and interesting geometry'

also thanks to David Wells




see chapter 22 of Pierre van Hiele's 'structure and insight'

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