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mathforge.org
Things I have learnt from the quadratic formula.

A 🧵

#ITeachMaths #UKMathsChat
December 14, 2024 at 11:28 PM
mathforge.org
Can I get an "amen"?

#UKMathsChat #ALevelMaths #ITeachMaths
mathsadvance.bsky.social Maths Advance @mathsadvance.bsky.social · May 19
In #MathsToday I was wondering about UCAS grades, personal statements etc.

Do other teachers think we should design a system where pupils apply to their preferred universities after receiving their A-Level grades or would you keep the current system? Is there a third way?
May 19, 2026 at 6:42 PM
mathforge.org
status: currently basking in reflected glory

#mathsky #UKMathsChat #ITeachMaths
catrionaagg.bsky.social Catriona Agg @catrionaagg.bsky.social · May 14
Inspired by @mathforge.org at the Easter conference, today I started teaching Y9 trig by using similarity to reference triangles. #MathsToday

I thought my class would need extra scaffolding so we started by using one triangle in lots of orientations…
Two triangles, both with angles of 25 degrees and 90 degrees. The first has a hypotenuse of 1, and an annotation reads “we call triangles with a hypotenuse of 1 'reference triangles'” Underneath the triangles is a ratio table with multipliers drawn on both horizontally and vertically, in order to find a missing length on the target triangle. The same reference triangle, and another similar triangle. This time, the ratio table has been used to find the hypotenuse of the target triangle by dividing by the vertical multiplier. The same reference triangle, with a similar target triangle in a different orientation. The same reference triangle, with a similar target triangle in a different orientation.
May 14, 2025 at 11:08 PM
mathforge.org
Long read, but well worth it.

#UKMathsChat #ITeachMaths #ALevelMaths
gro-tsen.bsky.social Gro-Tsen @gro-tsen.bsky.social · Jul 20
Let me expand upon this 🔽 and say something about AIs, mathematics, proofs, conjectures, problem-solving, goalposts, paperclips, genii and, more importantly, Campbell/Goodhart's law. 🧵⤵️ •1/38
gro-tsen.bsky.social Gro-Tsen @gro-tsen.bsky.social · Jul 20
… it turns out that, as LLMs have shown us, you can solve problems without developing any interesting math or teaching us much of worth, so the “problem solving” criterion was wrong all along (or only applicable for humans). Now this is embarrassing because it looks like the goalposts are moving. …
July 20, 2026 at 5:56 PM
colleenyoung.bsky.social
GCSE Maths revision 2025.
colleenyoung.org/2025/02/16/g... #UKMathsChat #iTeachMaths
February 16, 2025 at 10:57 AM
openmathbooks.bsky.social
#ITeachMaths #MathsToday
September 26, 2026 at 5:50 AM
segarrogers.bsky.social
περιφέρεια – periphery
Hence the letter π to denote 3.141592...
1706 William Jones
I didn't know that.
#UKMathsChat #iTeachMaths
January 17, 2025 at 1:06 PM
mathforge.org
Recent realisation about my understanding of calculus:

* I know why the integral of 2x is x².
* I have no idea why the derivative of x² is 2x.

#UKMathsChat #ALevelMaths #ITeachMaths #mathsky
May 3, 2025 at 11:34 AM
colleenyoung.bsky.social
A Level Maths and Further Maths Revision resources. #ALevelMaths, #iTeachMaths, #UKMathsChat colleenyoung.org/revision-act...
Refreshing Revision - Transum Mathmatics
March 9, 2025 at 9:37 AM
matttheapp.bsky.social
Remember the old KS2 maths audio tests? 🎧

The ones where pupils had to listen carefully, process the info and work things out independently?

That’s the thinking behind the Level Up audio questions on Maths White Board.

mathswhiteboard.com/levelup/audi...

#maths #iteachmaths
September 24, 2026 at 8:01 PM
mathforge.org
+1 for a teacher version

#mathsky #ITeachMaths
smbccomics.bsky.social SMBC Comics @smbccomics.bsky.social · Jul 27
Available in the SMBC store in "mom", "dad" and "parent" variants.
Credit to Richard McElreath for the language and graph on the mug.

MUG ◆ smbc-store.myshopify.com/products/goo...
COMIC ◆ www.smbc-comics.com/comic/number...
PATREON ◆ www.patreon.com/ZachWeinersm...
STORE ◆ smbc-store.myshopify.com
Part 1 of a 5-panel SMBC comic update where a woman gives her father a "#1 Dad" mug, which he refuses for a more exact mug. Part 2 of a 5-panel SMBC comic update where a woman gives her father a "#1 Dad" mug, which he refuses for a more exact mug. Promotional image for SMBC's "Not significantly different from a good dad" mug.
July 31, 2025 at 6:28 PM
segarrogers.bsky.social
Nice question! #iTeachMaths
February 1, 2024 at 8:40 PM
segarrogers.bsky.social
Quadratics task following Pointon and Sangwin’s Taxonomy.
#iteachmaths #ukmathschat
August 22, 2024 at 4:06 PM
colleenyoung.bsky.social
Polar Coordinates - a selection of resources.
colleenyoung.org/2025/02/02/p...
#UKMathsChat, #ALevelMaths, #iTeachMaths
Cartesian and Polar Grapher
February 2, 2025 at 8:11 AM
mathforge.org
Recommendation request: a good first (undergraduate) text in group theory.

Thanks!

#mathsky #ITeachMaths #UKMathsChat #HoagieHomies
November 23, 2025 at 9:29 PM
mathforge.org
"Your calculator is broken and will no longer do trig calculations. cos(1°) = 0.999848 to 6sf. Calculate cos(7°)."

#MathsToday #ALevelMaths #ITeachMaths
June 12, 2026 at 6:08 PM
openmathbooks.bsky.social
#MathsToday #ITeachMaths
August 11, 2026 at 7:12 AM
mathforge.org
What she said.

#UKMathsChat #ITeachMaths
December 14, 2024 at 11:44 PM
mathforge.org
Coincidentally, I currently have 4 solutions to this.

#UKMathsChat #ITeachMaths #mathsky
catrionaagg.bsky.social Catriona Agg @catrionaagg.bsky.social · Feb 16
Six squares and a quarter circle. The blue square has area 2. What’s the yellow area?

#geometrypuzzle
Six different coloured squares. Five are inside the quarter circle, and the sixth has two vertices on its circumference. The yellow square is the one on the bottom right.
February 17, 2026 at 10:44 PM
mathforge.org
#ALevelMaths #UKMathsChat #ITeachMaths
markrubin.bsky.social Mark Rubin @markrubin.bsky.social · May 26
The American Statistical
Association's six principles of proper use and interpretation of p-values (2016)

From Robert Matthews' (2026) new article: doi.org/10.1093/jrss...

#stats
The ASA Statement’s six principles of the proper use and interpretation of p-values (2016) 1. p-values can indicate how incompatible the data are with a specified statistical model. 2. p-values do not measure the probability that the studied hypothesis is true, or the probability that the data were produced by random chance alone. 3. Scientific conclusions and business or policy decisions should not be based only on whether a p-value passes a specific threshold. 4. Proper inference requires full reporting and transparency. 5. A p-value, or statistical significance, does not measure the sizeof an effect or the importance of a result. 6. By itself, a p-value does not provide a good measure o fevidence regarding a model or hypothesis.
May 26, 2026 at 4:16 PM
colleenyoung.bsky.social
December is coming....
#UKMathsChat #iTeachMaths #MathChat
colleenyoung.org/2024/11/24/a...
Advent and Christmas 2024.
Mathematical Advent Calendars and Christmas resources.
colleenyoung.org
November 24, 2024 at 4:36 PM
colleenyoung.bsky.social
Resources for Proof - A Level Maths
colleenyoung.org/2025/01/19/p...
#UKMathsChat, #ALevelMaths, #iTeachMaths
Mathematics - Proof
A Level Mathematics - Proof resources
colleenyoung.org
January 19, 2025 at 7:13 AM
mrs-p-maths.bsky.social
Found my year 7 class discussing Numberblocks in #MathsToday to help them with square numbers. Such a brilliant TV show that clearly has an impact on children's understanding of number. #iteachmaths
January 9, 2026 at 7:32 PM
mathforge.org
Was not expecting that one!

#Numberphile #mathsky #ITeachMaths
dailycorrelation.bsky.social Daily Spurious Correlation 🤖 @dailycorrelation.bsky.social · Feb 19
How good Numberphile YouTube video titles are correlates with The number of actuaries in Utah (r=0.916)
February 19, 2025 at 2:10 PM
matttheapp.bsky.social
I’m redesigning parts of the site to work better across different devices. This morning: Card Flip and Wheel of Reward.

Both are great for encouraging mini whiteboard participation and you can now customise the rewards too! 🎯

mathswhiteboard.com#startersrevi...

#maths #iteachmaths
September 26, 2026 at 6:12 AM