# Blog

## Archive

Show me a random blog post**2019**

**2018**

**2017**

**2016**

**2015**

**2014**

**2013**

**2012**

## Tags

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