Assorted christmaths

Here is a collection of Christmas relates mathematical activities.


I first encountered flexagons sometime around October 2012. Soon after, we used this template to make them at school with year 11 classes who had just taken GCSE papers as a fun but mathematical activity. The students loved them. This lead me to adapt the template for Christmas:
And here is an uncoloured version of the template on that site if you'd like to colour it yourself and a blank one if you'd like to make your own patterns:
The excitement of flexagons does not end there. There are templates around for six faced flexagons and while writing this piece, I found this page with templates for a great number of flexagons. In addition, there is a fantastic article by Martin Gardner and a two part video by Vi Hart.

Fröbel stars

I discovered the Fröbel star while searching for a picture to be the Wikipedia Maths Portal picture of the month for December 2013. I quickly found these very good instructions for making the star, although it proved very fiddly to make with paper I had cut myself. I bought some 5mm quilling paper which made their construction much easier. With a piece of thread through the middle, Fröbel starts make brilliant tree decorations.

Similar posts

Design your own flexagon
Electromagnetic Field talk
Christmas (2019) is over
Christmas card 2019


Comments in green were written by me. Comments in blue were not written by me.
 Add a Comment 

I will only use your email address to reply to your comment (if a reply is needed).

Allowed HTML tags: <br> <a> <small> <b> <i> <s> <sup> <sub> <u> <spoiler> <ul> <ol> <li>
To prove you are not a spam bot, please type "prime" in the box below (case sensitive):


Show me a random blog post

May 2020

A surprising fact about quadrilaterals
Interesting tautologies

Mar 2020

Log-scaled axes

Feb 2020

PhD thesis, chapter ∞
PhD thesis, chapter 5
PhD thesis, chapter 4
PhD thesis, chapter 3
Inverting a matrix
PhD thesis, chapter 2

Jan 2020

PhD thesis, chapter 1
Gaussian elimination
Matrix multiplication
Christmas (2019) is over
▼ show ▼
▼ show ▼
▼ show ▼
▼ show ▼
▼ show ▼
▼ show ▼
▼ show ▼
▼ show ▼


arithmetic flexagons pac-man interpolation python news machine learning rhombicuboctahedron braiding sorting golden spiral polynomials video games weak imposition final fantasy geometry a gamut of games statistics martin gardner finite element method cambridge latex national lottery chalkdust magazine talking maths in public oeis inverse matrices platonic solids stickers geogebra preconditioning mathslogicbot game of life probability world cup graph theory london approximation reddit coins estimation phd draughts rugby royal institution royal baby cross stitch big internet math-off folding paper map projections bubble bobble noughts and crosses javascript chess hats data raspberry pi light trigonometry the aperiodical manchester php craft christmas card harriss spiral sound matt parker games sobolev spaces simultaneous equations determinants logic squares numerical analysis mathsteroids radio 4 countdown convergence ucl matrix of minors game show probability pythagoras puzzles electromagnetic field gerry anderson matrix multiplication manchester science festival people maths frobel propositional calculus quadrilaterals books captain scarlet triangles binary ternary tmip misleading statistics error bars nine men's morris speed fractals golden ratio signorini conditions london underground folding tube maps inline code computational complexity graphs realhats mathsjam go dataset wave scattering menace asteroids european cup curvature programming boundary element methods palindromes pizza cutting twitter reuleaux polygons football matrices data visualisation bempp gaussian elimination sport advent calendar hexapawn bodmas exponential growth weather station plastic ratio logs christmas chebyshev matrix of cofactors wool accuracy dates tennis dragon curves hannah fry


Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2020