Cellular Automata in Google Sheets

I’ve been exploring binary with Year 8s and thought they might like to have a look at the weird world of Cellular Automata.

There are lots of resources out there but I couldn’t find one that helped them create their own easily.…

Research on Ability Grouping and Setting in Maths Classes

I’ve been trying to tie together some of the various bits of research I’ve come across for and against ability grouping in maths. Below is what I’ve got so far, but would love any other pointers, for or against.

The last 30 years’ research suggests setting marginally improves high-achievers, but to the detriment of everyone else.

Doodling and Maths

Vi Hart’s site is fabulous. I keep banging on to my students that it’s not just OK but important to doodle in maths. It helps you ‘see’ problems if nothing else. Some get it, some think it’s just a bit weird.…

Passwords and Powers

xkcd’s Password Strength cartoon might be a fun prompt for a maths lesson.


Children at primary school seem to like cracking codes, and hackers have a certain murky glamour to them. Better yet, password, security and spying is a rich topic.…