Do any IB teachers here have experience of or advice for teaching AA SL and HL together? We're having to do this next academic year and are trying to work out how to feasibly arrange the course, with Y13 material a particular challenge. TYIA #MathSky #IBMaths

If I shuffled 10 cards, ace through 10, what's the probability that if I reveal the cards one by one, somewhere in the sequence I will get a 6 immediately followed by a 7?

🚨 Hot off the press @drfrostmaths.bsky.social ! 🚨 Our Edexcel IGCSE Maths Likely Topic Papers for Paper 2 are now live! 📘✏️ 🖥️ Online Worksheets: buff.ly/nMsxEsS 📄 Download PDF: buff.ly/T0D0Lqz AQA and OCR will be released later today!

Planning to start Y11 lesson with this in #MathsToday. We say goodbye to them next Thursday. Yikes!

#iTeachPhysics: Small update to this simple harmonic motion sim, graphs are now big and on top of each other instead of tiny and stacked. That is all :) afreeparticle.com/shm.html

OK everyone - we have a cover sorted out and pre-sales are open! Roll up and buy one now at unchcrosswords.com Please do repost and share where you can, I'm really keen to get these excellent puzzles in front of as many people as possible...

In #Mathstoday I demonstrated how AI can be used to aid revision by generating similar questions. I've found this useful recently and hope my Y12 students can do this to prepare for end of year exams

"The best way to revise maths is to do maths" - Y11 maths teachers around now. This QR code poster generates simple revision grids of 12 questions loosely* tied to GCSE grades. *This will get better over the years. (I'm almost 3 years into the MathsBot curriculum project now)

Does anyone know of an organised database of official IB maths exam questions (specifically AISL but any course would be useful) organised by topic? TIA #MathSky #IB #IBmath #IBmaths

More of a formal intro to Hypothesis testing in #MathsToday, introducing key terminology. Wondering whether to simply my conclusions to 'reject null' or 'do not reject null' (with a sentence on context as required). How necessary is the phrase 'in/sufficient evidence to...'? Do others do without?

Y12 are starting hypothesis testing tomorrow and had to come back to this walk through introduction to the goodness of fit test. It's really superb. My first lesson normally starts with asking students to write down a random letter A, B or C. We look at the distribution and discuss...

🔹🔷🟦 #FridayQuiz 🟦🔷🔹 🔹 Like, share and repost 🔹 Have a go and good luck! 🔹 Share your score below with a gif 🔹 Share the quiz with whoever you want! Happy #Friday! docs.google.com/forms/d/e/1F...

Someone I follow has a great parabola plotting tool on their website. Can anyone point me in the right direction? Side note: Do any other maths teachers try to avoid the words 'right' and 'too' during conversations with students? Can be very confusing depending on the subject! Isn't English silly 🫠

We recapped the 3 Hypothesis Tests for the IB AISL course in #mathstoday using a card sort I whipped up yesterday based on a previous revision task. Tried to keep it as simple as possible. Would you change/add/remove anything?

Normal distribution revision today with Y13 using the excellent set of questions from Christos Nikolaidis (not on bsky?) in #MathsToday. Some of them finally appreciating how useful a diagram is for these questions!

In #MathsToday I used the Nandos menu to help explain how to answer 'given that' probability questions. "What shall I order...given that I want a sandwich, wrap or burger?"

Trying the 2026 challenge from @mathequalslove.bsky.social with Y8 today. Great way to recap order of operations. Lots more great activies and puzzles at mathequalslove.net/new-years-ma...

We run a monthly puzzle and are looking for small prizes for students who produce the best solutions. Any recommendations? Best option so far is miniature wooden tangrams which can be bought in bulk on Amazon. TIA! #UKMathsChat #MathSky #MathsToday

Here’s the first four tasks from my presentation on developing graphical literacy with National 5 and Higher Mathematics pupils at yesterday’s Scottish Mathematical Council annual conference in Stirling. I’d love to see what different functions the bsky maths community can come up with for these.

Create retrieval starters quickly and easily which can be projected or printed. Answers provided. Free and no sign up, or become a member to access the generators without the ads and support further development. generator.interactive-maths.com #MathsToday

In #MathsToday we played around with the pi search site from @st3cks.bsky.social (katiesteckles.co.uk/pisearch/). Pi-tastic!

I did the AMSP stats 1 course online a couple of years ago and remember a brilliant Desmos file that demonstrated taking 2 samples from a normally distributed population as a way to demo hypothesis testing. I didn't save it and can't find anything similar from Googling. Any thoughts? #ALevelMaths

In #mathstoday (well, yesterday) I began my journey with Y10 towards further trig, specifically the sine rule, via circle theorems after being inspired by Don Steward (donsteward.blogspot.com/2012/04/sine...). This meant a lesson on constructions and thinking about centers of triangles. Great fun!

In #mathstoday we used images from the @mathforge.org site to derive the formula for arithmetic series (code.mathforge.org/Arithmetic/). This followed from Monday's lesson on my Monzo 1p challenge to see if the class could work out how much I'm going to save (monzo.com/features/1p-...)

In #mathstoday we calculated the bond angle in methane. It was nice to follow this idea through that I'd had last week. I borrowed molymod kits from the chem department to help with the visualisation and this diagram provided a good amount of scaffolding (davechessgames.blogspot.com/2018/01/calc...)

Prime Factory! A fun game to practise prime factorisation. What's the largest prime you can unlock? mathsbot.com/puzzles/prim...

Found a mini Dobble game over Christmas so had a go at exploring its finite projective plane. Luckily only required a 5x5 square, not a 7x7 as in the full game and as demonstrated by @standupmaths.bsky.social in his video: youtu.be/VTDKqW_GLkw?...

In #MathsToday (well, lunch as we ran out of time yesterday) a couple of Y10 students finished off a Sierpinski Christmas tree. Inspired by @debhennessy.bsky.social. Only managed 64 tetrahedra, but with Möbius paper garlands

In #MathsToday Y10 were completing the square for the first time. We started off with these images from MEI which helped develop some useful language. For the rest of the lesson we were thinking about big squares and tiny squares thanks to Rose's observation

In #MathsToday we modelled the SpaceX Starship as a cylinder and cone to approximate its volume. Unfortunately, the space/rocket fanatic was absent today!

In #MathsToday I had the 3D models out to help Y13 visualise a pyramid question. Some said how they wished they could have this with them in an exam! A reminder that visualisation is such a powerful skill, one I probably take for granted.

In #MathsToday Y9 were in their element completing a @mathsbox.bsky.social treasure hunt on finding lengths using trig ratios. Was lovely to take a back seat! Also, new school shoes arrived in the post 👞

@teakayb.bsky.social I think the shortest path is this: Write the number in binary and read from left to right: If it's a 0, do "x2". If it's a 1, do "x2", then "+1". 100 decimal = 1100100 binary, so it's +1, ×2, +1, ×2, ×2, ×2, +1, ×2, ×2.

In #MathsToday with a small Y11 class we were expanding triple brackets. Students rolled my d8 dice to create their own questions. Really need to get some d10... Any recommendations for where to buy?

In #MathsToday I made a very simple demonstration of the graphical definition of functions and their inverses using @geogebra.org. I've enjoyed doing a couple of these things 'live' recently, to hopefully show the students that it's not magic! www.geogebra.org/m/z3ndwkrv

In #mathstoday Y8 enjoyed a few number detectives from @mathsbox.bsky.social. I enjoyed describing how one can develop relationships with different numbers as I was reminded that 56=7×8. Similar thing the other week when 7, 11, and 13 popped up and I could Y11 that cool trick...if you know you know.

In #MathsToday Y10 were solving this fiendish set of questions on Transum: www.transum.org/Maths/Exerci.... Highlight was a s's suggestion of simply rearranging question 32. A nice reminder not to blindly follow an algorithm.

In #MathsToday (well, yesterday...) we were expanding brackets in Y9 and enjoyed working through this variation grid from mathsbot.com/grids/binomi.... We used pattern spotting to fill in the last couple of answers.

In #MathsToday I used Desmos to demonstrate the effects of constants on data sets www.desmos.com/calculator/k....