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 "graph" 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

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

Archive

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