Happy Christmas to educators everywhere.
Some Christmas puzzles:
From OCRMaths. the final OCR Maths puzzle before Christmas.
Transum Mathematics is a great source for Christmas Puzzles, for Christmas Eve, how many palindromic numbers can you find.
On the subject of Palindromes, a reminder of this investigation:
Try 89!
and from Numberphile…
From the University of Oxford, Mathematical Institute – two puzzles for Christmas and from Dr Tom Crawford, University of Oxford – 3 puzzles increasing in difficulty.
If you still need a card or two for mathematical friends – see this collection.