Friday, 27 July 2018

RT @OCR_Maths: Maths spotting on holiday - zwei (written along a mirrored wall in a U-Bahn station) #mathsspotting https://t.co/9V8djRiOQY - The Calculator Guide from Twitter


from Twitter https://twitter.com/GuideCalculator

July 27, 2018 at 08:47AM
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