At the MathsJam annual gathering, one of the many activities attendees can participate in is a competition competition – entrants each come up with a competition and submit it into a larger competition, other attendees enter each of the competitions within the competition competition, and the organisers get the chance to make long and confusing…

# SAMDOB – mess up the order of operations

While I’m on strike, I’m catching up on stuff I’ve made but never posted about here. At the Talking Maths in Public conference last August, I was talking with Katie Steckles and Kevin Houston about the order of operations. I think that another one of those ambiguously-written sums had gone round Twitter again. I said…

# Mathematics is Everywhere worldwide video – call for contributions

The International Day of Mathematics (a new national day from UNESCO) will take place on 14th March 2020. This includes a collective video, to which you are invited to contribute – if you’re quick: We are putting together a collective video for the first official International Day of Mathematics centered on this yearâ€™s topic Mathematics…

# A paper version of the Seven Triples puzzle

Last year I wrote about a 3D-printed puzzle I’d designed, called Seven Triples. At work we want to use this puzzle during an A-Level enrichment day, which means we need about twenty copies of it. I 3D-printed four copies over the course of a couple of weeks, in amongst other jobs, and I don’t have…

# Mathematical Objects: Pencil

A conversation about the mathematics of chemistry inspired by a pencil, plus a chat about approximation. Presented by Katie Steckles and Peter Rowlett. Podcast: Play in new window | Download Subscribe: Android | Google Podcasts | RSS

# Carnival of Maths 178

The next issue of the Carnival of Mathematics, rounding up blog posts from the month of January, is now online at Storm Bear World. The Carnival rounds up maths blog posts from all over the internet, including some from our own Aperiodical. See our Carnival of Mathematics page for more information.

# Geogebra to Cake in Five Steps

In the Aperiodical’s Big Internet Math-Off 2019, Becky Warren posted an entry about Geogebra’s ‘reflect object in circle’ tool (it’s the second article in the post). I enjoyed playing with the tool and, after making a few colourful designs, it occurred to me that one of them would make a great cake for the MathsJam…