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 year’s topic Mathematics is Everywhere. Clips from all over the world (including yours!) will illustrate the various places where math can be found.

The idea is you record a video of 15 seconds or less showing something that people might not realise is interesting mathematically, and send it in before 21st February 2020.

For more details of what and how to submit, including technical tips, check out the Mathematics is Everywhere Worldwide Video webpage.