Today is the third of January, and the third day of the year – and since this year it also falls on a Thursday, making for excellent pun opportunities, a group of mathematicians including Jim Propp, Evelyn Lamb, Zoe Griffiths, Ben Orlin, Matt Parker and several others have chosen to use today to celebrate the number $\frac{1}{3}$ (and in America, you’d even write the date as 1/3). Today is officially **Thirdsday**! Celebrate by:

- reading Jim’s extensive blog post on the subject
- watching Matt’s new YouTube video
- downloading Zoe’s new Think Maths classroom resource
- reading Evelyn Lamb’s Scientific American post
- looking at Ben Orlin’s bad drawings on the topic
- searching for ‘thirdsday’ on Twitter to see what people are up to

I personally will be sketching the middle third Cantor set, as it’s my favourite fractal.