# Blog

## Archive

Show me a random blog post**2019**

**2018**

**2017**

**2016**

**2015**

**2014**

**2013**

**2012**

## Tags

gerry anderson coins aperiodical big internet math-off raspberry pi royal baby accuracy captain scarlet data plastic ratio propositional calculus a gamut of games arithmetic programming estimation martin gardner mathsteroids london underground game of life news hexapawn approximation python final fantasy reuleaux polygons ternary menace nine men's morris matt parker noughts and crosses interpolation games polynomials dates braiding people maths php go cross stitch binary curvature video games light trigonometry pac-man electromagnetic field frobel platonic solids sound puzzles harriss spiral radio 4 machine learning game show probability golden spiral misleading statistics wool countdown folding paper rugby sport world cup european cup probability tennis golden ratio national lottery pythagoras mathslogicbot flexagons map projections error bars bodmas manchester science festival realhats palindromes graph theory weather station chebyshev rhombicuboctahedron twitter the aperiodical london inline code bubble bobble draughts christmas card geometry dataset fractals speed books chess triangles chalkdust magazine dragon curves pizza cutting hats football oeis craft javascript manchester christmas asteroids stickers latex reddit statistics sorting folding tube maps logic**2013-12-23**

## Assorted christmaths

Here is a collection of Christmas relates mathematical activities.

### Flexagons

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 (2018) is over | Christmas cross stitch |

### Comments

Comments in green were written by me. Comments in blue were not written by me.

Add a Comment