Welcome to the Parallel Maths Project!
Be challenged, get curious, do maths.
Stretch your brain every week.

Dr Simon Singh, author of the No. 1 bestseller Fermat’s Last Theorem and The Simpsons and Their Mathematical Secrets has created a set of weekly maths challenges – just 15 minutes of interesting, fun and challenging material that goes beyond school maths: mystery and history, activities and oddities, puzzles and problems. (After Christmas, the challenges will take a bit longer.)

Sign up and each week on Thursday you will receive a Parallelogram, a weekly set of maths challenges.
It’s FREE to sign up and all the materials we offer are FREE.
Even without an account, you can get a taste of what we offer by just clicking on the Parallelograms on the left.
Teachers can create an account and set Parallelograms for their classes.
This site is aimed at 11- to 15-year-olds, but everyone is welcome.
We’ll be adding material for older students next year.

Noun: Parallelogram
Pronunciation: /ˌparəˈlɛləɡram/

a four-sided plane rectilinear figure with opposite sides parallel.
mathematics running parallel to classwork (posted via an online telegram).

The project was devised as an add-on for the Top-Top Set Project and is supported by the Good Thinking Society. All the materials are completely free.