More from Chalkdust
Dear Dirichlet, Issue 11
Grant applications, musical media and last-minute Olympics training are the topics readers have sent in to the professor's postbox this issueBells, braids and taxicabs
An adventure that starts with a morning of bell ringing and ends with a mad dash in a taxiTop Ten: Units of measurement
The definitive chart of the best unitsFrawks
Exploring non-random walks using fractionsOrigami tesseract
Folding origami, building networks, making projections and multiple dimensions!Prize crossnumber, Issue 03
Be in for a chance to win a £100 goody bag if you can solve our fiendish crossnumber