This page has past episodes of the Oxford Online Maths Club.
You can watch previous episodes and access all the further reading with the links below. There's no need to watch the episodes "in order"; choose one with a title that sounds interesting to you!
Season 6 (2023)
Summer Project Ideas
Probability for Counting
Crate Labelling Problem
Sums of Squares
Season 5 (2023)
For our season finale, in this episode we're going all the way back to Pascal's triangle to complete some unfinished business...
History with Zakkai
The history of maths is rich and complicated and on this episode, by popular demand, Zakkai is back on the livestream to tell some stories from across time.
Truchet Tiles with Mochan
Quantum Zeno with Sijie
Zeno's paradox says that an arrow observed in flight has no motion. In classical physics, we can argue our way around this. But in the world of quantum mechanics, things are (even) weirder. Sijie joins us on this episode to explain.
Inversion with Rebekah
Surreal Numbers with Manna
Infinity with Zakkai
This week on the livestream, current student Zakkai is here to talk about infinity and history of mathematics.
Powers & Patterns
What's your favourite triangle? This episode introduces patterns in Pascal's triangles, with a detour to look at cellular automata.
Season 4 (2022)
In this episode, we've got a pack of cards with maths facts or puzzles on every card. We talk about a few random cards before dropping the link where you can get all of them for free.
It's something different in this episode of the Oxford Online Maths Club; maths that you've shown us! We've recently met lots of people at open days and some of you showed us maths that you're interested in; here are some of the things people have told us about.
Heads or Tails?
In this episode, the people in the live chat choose a sequence of three coin results; heads or tails, then James chooses a sequence. Which sequence will come up first? Let's find out!
This episode had serious tech issues - the audio is OK but the video is very laggy, and everything breaks after half an hour. Don't worry, it's back to normal next week! James tries to draw a curve using only straight lines.
Spirals with Vectors
What happens if four dogs start at the corners of a square and each run towards the next dog around? In this episode, we try to find out with pencil and paper, and then with computer code, and then with vector calculus.
Sums and Integrals
In this episode, we use integrals to approximate sums and deduce some facts about the harmonic sum (one plus one-half plus one-third plus...).
In this episode, the cabbage problem. A farmer needs to get across a river with a sheep, a fox, and a cabbage; we solve the classic problem and chat about some variants.
Three people are wearing red or blue hats; they can see each others' hats and they have to work out the colour of their own hat. We find out how in this episode.
Liars & Tigers
Season 3 (2022)
What's the shape of water falling from a tap? We investigate in this episode. There's also time to revisit a problem with squares from a couple of weeks ago.
Ioana shows us how to find a differential equation for a hanging chain, and solve it too!
Bridges & Tea Cups
In this episode, James works on two problems from the NRICH website.
What's a good way to describe the points inside a circle? What about ellipses? In this slightly unusual livestream, James investigates.
Max is on the livestream to explain what a Fourier series is, how to find one, and what to do with it once you've found it.
Snakes & Ladders with Jacques
Jacques has been simulating Snakes and Ladders with Python, and comparing the results with theoretical Snakes and Ladders speedrunning strategies.
Measure Theory with Flora
Inequalities with Ittihad
Double Integration with Lucy
Groups, bosons, and monsters with Jonah
Season 2 (2021)
A few more things
Interview Question with Tom
Prime Time with Ittihad
Do you like prime numbers? Do you like complex numbers? We've got both! In this episode, Ittihad explains the theory behind Gaussian Primes, which is a theory of prime numbers which are also the complex numbers. We also prove a theorem about writing real primes as the sum of two squares.
PDEs with Jonah
Season 1 (2021)
More Curve Sketching with Deepak
After Season 1, James and Deepak met up to do some more curve sketching!
Season 1 wrap-up
James, Deepak, Flora, Francesca, and Ittihad met up again to discuss Season 1 of the Oxford Online Maths Club.