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geometry
Polydron special offer: Use code ATM10 for 10% off your Polydron order (offer ends 30 September 2025)
https://www.polydron.co.uk/shop.html
#coupons #coupon #discounts #polydron #offer #geometry #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education
‘Exploring triangles at the Institute of Mathematics Pedagogy (IMP)’
Tandi Clausen-May reflects on an exploration of 3D shapes made from triangles.
https://atm.org.uk/write/MediaUploads/Journals/MT295/03.pdf
One of the two free articles from Mathematics Teaching 295 for non-members.
#geometry #triangle #helix #polydron #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education #mathematics
David G. Wells’ “The Penguin dictionary of curious and interesting…” books are excellent and have been great source of inspiration for me.
They are now are almost 30 years old.
What new entries would you put in these books—either because they’re new after publication, or could have (should have) been included at the time?