Mathematician Katherine Johnson has died at the age of 101. She calculated rocket trajectories and orbits for early NASA space flights, including the missions that sent the first American in space, the first American to orbit the Earth and the first men to walk on the Moon, as well as contributing early work on the…

# Ada Lovelace Day is fundraising

Ada Lovelace Day (which is much more than just a day) is fundraising.

# The smallest unique Cheshire Cat

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