mscroggs.co.uk
mscroggs.co.uk

subscribe

Blog

 2013-12-23 
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.
                        
(Click on one of these icons to react to this blog post)

You might also enjoy...

Comments

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> <logo>
To prove you are not a spam bot, please type "tneitouq" backwards in the box below (case sensitive):

Archive

Show me a random blog post
 2026 

May 2026

World Cup stickers 2026

Apr 2026

A new puzzle every day
Mixing Wordle with other games

Feb 2026

Christmas (2025) is over
 2025 

Dec 2025

Christmas card 2025

Nov 2025

Christmas (2025) is coming!

Sep 2025

The partridge puzzle

Aug 2025

TMiP 2025 puzzle hunt

Jun 2025

A nonogram alphabet

Mar 2025

How to write a crossnumber

Jan 2025

Christmas (2024) is over
Friendly squares
 2024 

Dec 2024

A regular expression Christmas puzzle
Christmas card 2024

Nov 2024

Christmas (2024) is coming!

Feb 2024

Zines, pt. 2

Jan 2024

Christmas (2023) is over
 2023 
▼ show ▼
 2022 
▼ show ▼
 2021 
▼ show ▼
 2020 
▼ show ▼
 2019 
▼ show ▼
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

books wool game show probability pokémon wordle speed games binary tetris platonic solids christmas card logs determinants weak imposition pythagoras inline code sound ucl exponential growth databet martin gardner coventry stickers craft pi approximation day european cup gather town folding tube maps triangles weather station newcastle harriss spiral pizza cutting interpolation raspberry pi thirteen flexagons chebyshev convergence royal baby folding paper menace hannah fry mean misleading statistics correlation numerical analysis matrices sobolev spaces christmas quadrilaterals standard deviation statistics recursion errors asteroids javascript regular expressions machine learning error bars programming propositional calculus manchester news matt parker royal institution anscombe's quartet warwick friendly squares coins partridge puzzle fractals big internet math-off electromagnetic field bempp world cup finite element method countdown logic graph theory simultaneous equations frobel bubble bobble london underground logo datasaurus dozen advent calendar rust bluesky gerry anderson php phd edinburgh finite group rhombicuboctahedron youtube light final fantasy palindromes hexapawn bots signorini conditions cambridge accuracy reddit data guest posts dates stirling numbers nine men's morris matrix of minors reuleaux polygons crosswords runge's phenomenon turtles trigonometry pokémon matrix of cofactors live stream nonograms inverse matrices estimation a gamut of games gaussian elimination mathsjam curvature dinosaurs mathsteroids arithmetic zines preconditioning braiding pac-man 24 hour maths ternary plastic ratio radio 4 people maths computational complexity realhats latex manchester science festival talking maths in public arrangement puzzles boundary element methods sport puzzles noughts and crosses dragon curves probability wave scattering video games tmip alphabets bodmas crossnumbers cross stitch squares golden ratio data visualisation kings pi geogebra fence posts tennis hats draughts the aperiodical graphs kenilworth game of life london map projections wordle chalkdust magazine numbers python geometry chess oeis sorting crossnumber mathslogicbot national lottery fonts hyperbolic surfaces crochet rugby dataset golden spiral polynomials approximation pascal's triangle football matrix multiplication captain scarlet go

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2026