Wrong, But Useful Wrong, But Useful

In this, the final episode of WBU, @reflectivemaths and I discuss: @samuel_hansen's antiracism post((get well soon, Samuel)). Dave and I both assert that Black Lives Matter and acknowledge that we have a significant amount of work to do to create a just society. In a whiplash-inducing change of tone, tooth fairy maths Multiplayer Nim (‘unlucky 10’) The Million Game from @drewfoster Dave seems to have a thing about noughts and crosses The Mathoff is over: thanks, everyone! Now, more than ever, would a decent text book be the answer? The chaos game in a hexagon Social distancing in 3D Via […]

In this, the penultimate episode of Wrong, But Useful, we’re joined by @karenshancock (who is Karen Hancock in real life). We discuss: A scoring system for an online quiz round. The Big Mathoff What is a surd? Currently reading Ratio by Michael Ruhlman - a cookery book that starts from the principles Some Noughts and Crosses variants https://twitter.com/mburnsmath/status/1248330254281662464 www.marilynburnsmathblog.com/five-twists-on-tic-tac-toe/ nrich.maths.org/1199 Core maths festival (via @mathsTechnology/Tom Button) For any given cubic if a line intersects it at three points then the sum of the x-coordinates of these points will be constant. An infinite monkey music bot A fractal Odds and Evenings […]

In episode 78 of Wrong, But Useful, we're joined by @c0mplexnumber, who is Clarissa Grandi in real life. This month, we discuss: Clarissa's Artful maths books, available via Tarquin - the activity book and the teacher's guide Number of the podcast: $\phi$ (and 3D maths) @anniek_p's #mathartchallenge Aperiodical’s big math-off is live! Also the stickerbook Rabbits and elephants Super-rectangles (via Peter Rowlett): Maths to get you through lockdown COVID-19 and Bayes's theorem Supermarket 2m distancing/route planning Richard Guy (103 1/2) and John Conway (82) have died. Casio calculator emulators now free Probability Question from an American Maths challenge (via Peter […]

In this month's Pi Day Special episode, we're joined by @aap03102, who is Chris Smith in real life. We discuss: Negative primes Surdoku (look in issue $2^5$) Chris's dark past Chalkdust book of the year Book (or writing) ideas (I’m trying to compile a big list of maths things I - or anyone - could write about. If you have such an idea, let me know and I’ll stick it on the list.) Chris's Pi Day antics Katherine Johnson has died, aged 101 A COVID-19 lesson plan and dataviz. Distance-time graphs * Edited 2020-03-14: To subscribe to Chris's maths newsletter, […]

What's this? Didn't we have a WBU last week? We did indeed. Only we cut out a section of our conversation with @dr_teeluck about APR to keep the episode length (somewhat) reasonable. Here it is as a special bonus episode for your enjoyment.

In this episode of Wrong, But Useful, we’re joined by @dr_teeluck, who is Dr Vijay Teeluck in real life. We discuss: sunrise (posts by @colinthemathmo and by me got the same answer, someone else disagrees, nice thing to explore) favourite numbers a lovely post by @samhartburn about tetrahedra fitting through each other bridges (why are the bricks not parallel with the road?) The R0 value of the coronavirus Internet once again astonished that multiplication commutes Perfect espresso formula In communicate the bloody thing properly news: $|-1|-2|-3|$ thread here “Ten times greater” “Ten times smaller” Zero point seventy-five per cent via […]