Rob Southern
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mrsouthernmaths.bsky.social
Rob Southern
@mrsouthernmaths.bsky.social
1.1K followers 550 following 520 posts
Maths teacher - A level specialist. Co-author of "Teaching A Level Maths" with @susanwhitehouse.bsky.social published by the Mathematical Association.
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mrsouthernmaths.bsky.social
##ALevelMaths
November 7, 2025 at 4:35 PM
mrsouthernmaths.bsky.social
##ALevelMaths
November 7, 2025 at 4:35 PM
Reposted by Rob Southern
ukmathstrust.bsky.social
Teachers! View our Competitions Calendar and sign up here: ukmt.org.uk/competitions

#MathsToday #UKMT #MathsCompetitions
October 31, 2025 at 10:19 AM
mrsouthernmaths.bsky.social
A very wet Great South Run. Definitely happy with the time!
October 19, 2025 at 3:20 PM
Reposted by Rob Southern
catrionaagg.bsky.social
Today I realised that “integrates like” is the phrase I’ve been missing for talking about spotting the structure of an integral. #ALevelMaths #MathsToday
A selection of integrals and the structure of their solutions, linked by an arrow labelled “integrates like”
October 15, 2025 at 4:32 PM
mrsouthernmaths.bsky.social
##ALevelMaths
mrlevmaths.bsky.social MrLevMaths @mrlevmaths.bsky.social · Oct 12
Had a great time at #Mathsconf39 yesterday. Thank you to everyone that came to @mrsteele314.bsky.social and my session - the collective "Oohs" when people came up with good questions were a joy. #Mathstoday
lasalleed.bsky.social Complete Mathematics @lasalleed.bsky.social · Sep 19
📣 #MathsConf39: Using Variation Theory in A Level Maths with Nathan Lev (@mrlevmaths.bsky.social) & Shane Steele (@mrsteele314)

Learn to design question sequences that target misconceptions, sharpen focus & deepen understanding.

completemaths.com/community/ma...

#UKMathsChat
October 12, 2025 at 11:16 AM
Reposted by Rob Southern
catrionaagg.bsky.social
In #MathsToday I made 40 A Level teachers colour in representations of the binomial distribution.

This is your regular reminder that if you teach #ALevelMaths you should definitely try to join your local Maths Hub’s A Level Pedagogy group. There is some brilliant stuff going on all over England.
A quartet of representations of the binomial distributions. Screenshots from https://www.desmos.com/calculator/3ea50eafbc X ~B (10, 0.4) Shade the diagrams to represent the probability P(3 ≤X <6) and draw a numberline. X~B(10,0.4) Shade the diagrams to represent the probability P(3 ≤ X < 6) and draw a numberline. X ~ B(8, 0.7) Which is larger: P(X < 5) or P(X = 6)? X~B(12,0.36) P(X ≥ c) < 0.5 What is the smallest possible value of c? X~B(10,0.4) Calculate the interquartile range of this distribution. What is the mode? X~B(8, 0.7) P(X ≤ a) < 0.1 What is the largest possible value of a? P(X ≥ b) < 0.1 What is the smallest possible value of b? X~B(12,0.36) P(X ≤ a) < 0.2 What is the largest possible value of a? P(X ≥ b) < 0.2 What is the smallest possible value of b?
October 8, 2025 at 8:18 PM
mrsouthernmaths.bsky.social
##ALevelMaths
draustinmaths.com Amanda Austin @draustinmaths.com · Oct 5
✨New A-level resources from this week's Year 12 lessons on graphical inequalities, algebraic fractions and algebraic division. The new A-level section is slowly growing! www.draustinmaths.com/a-level
#MathsToday #ALevelMaths #UKMathsChat
A-level Maths task on finding the remainder when dividing a polynomial by a linear expression using algebraic long division. A-level Maths task on shading regions in two dimensions divided by linear and quadratic inequalities. A-level Maths tasks on (i) solving linear and quadratic inequalities graphically, and (ii) simplifying algebraic fractions either by splitting the fraction or by factorising.
October 5, 2025 at 4:38 PM
Reposted by Rob Southern
draustinmaths.com
Friday night update! Some new algebra resources:
✨Expanding Brackets Name the Film
✨Factorising Decode the Joke
✨Factorising with Bracketed Factors Practice Strips
✨Factorising Quadratics Practice Grid
Freely available at www.draustinmaths.com
#mathstoday #ukmathschat
October 3, 2025 at 7:14 PM
Reposted by Rob Southern
etzsmc.bsky.social
Supporting students for the upcoming TMUA/MAT maths entrance exams? Two free resources to help (both with answers) at

www.tes.com/teaching-res...

and

www.tes.com/teaching-res...
September 19, 2025 at 1:30 PM
Reposted by Rob Southern
mrlevmaths.bsky.social
Excited to be running my first session at #Mathsconf39 with @seethelanes.bsky.social

Talking about Variation Theory in #Alevelmaths and how fun it as a guide for writing series of questions!

Here is a set I wrote in #MathsToday for my stats Y12s!

(also the classic misspelling of Natan 🙈)
A series of questions getting students to find different quartiles from a grouped frequency table
September 19, 2025 at 5:24 PM
Reposted by Rob Southern
ridermeister.bsky.social
That time of year again...

Please share the below booklet with any pupils thinking of studying maths at universities that use interviews as part of the admissions process.

www.drfrost.org/downloadable...

#MathsToday #AlevelMaths
Dr Frost Learning
Dr Frost provides an online learning platform, teaching resources, videos and a bank of exam questions, all for free.
www.drfrost.org
September 19, 2025 at 7:20 AM
Reposted by Rob Southern
mr-man-maths.bsky.social
Teaching #ALevelMaths at Gloucs or Worcs? Interested in working together on "Teaching for Mastery" at A Level and seeing a live lesson in action? Then come and sign up to my workgroup via GLOW Maths Hub on tinyurl.com/yy5ut3uw
First session is on Monday 3rd November at North Bromsgrove High School
mr-man-maths.bsky.social Matt Man @mr-man-maths.bsky.social · Feb 6
In #ALevelMaths today, our @ncetm.bsky.social GLOW Maths Hub workgroup planned, delivered and reflected on a lesson for my Year 13 group on modelling with trigonometry at North Bromsgrove High School.
Pupils were brilliant, the participants enjoyed it, and all of us are now inspired from this!
September 18, 2025 at 8:43 PM
mrsouthernmaths.bsky.social
##ALevelMaths
meimaths.bsky.social MEI @meimaths.bsky.social · Sep 17
Is your school ready to become champions?

Ritangle 2025/6 is coming and will be open for registrations from 8 October!

Keep your eye on our website, BlueSky and X for more information.

#Ritangle #MathsChallenge
September 17, 2025 at 6:29 PM
Reposted by Rob Southern
dandraper.bsky.social
#MathsToday Teaching histograms to year 11 this week and returned to @drrowlandson.bsky.social’s amazing planning series to start. So much deep thought and insight in every post! 🙌 ponderingplanning.wordpress.com/2020/06/05/f...
Filling in the Gaps With Histograms
This blog posts focuses on the sorts of histograms that students see in GCSE Mathematics: histograms with unequal class intervals and where the heights of the bars represent frequency density.&nbsp…
ponderingplanning.wordpress.com
September 17, 2025 at 2:22 PM
Reposted by Rob Southern
mathsjem.bsky.social
New! My 192nd gems post. Ideas, updates and resources for maths teachers. 💎

www.resourceaholic.com/2025/09/5-ma...

Hat tips to follow.

#mathstoday #ukmathschat #alevelmaths #iteachmath
Pictures from blog post
September 13, 2025 at 11:52 AM
mrsouthernmaths.bsky.social
##ALevelMaths
nathanday.bsky.social Nathan Day @nathanday.bsky.social · Sep 12
In #MathsToday, Year 12 looked at some graph intersections and solving some simultaneous equations, and then sketching the graphs!
A maths worksheet titled “Simultaneous Equations & Points of Intersection.” It shows a grid where different pairs of equations intersect, and the task is to fill in the correct intersection points from a list of given coordinates. Some boxes are shaded and students must explain how many intersection points there are, without calculating the coordinates. The previous task, but with answers. An image of the graphs from the task.
September 13, 2025 at 6:35 AM
Reposted by Rob Southern
jmmaths.bsky.social
Loving the process of planning yr12 quadratics. Wonderful resource from @meimaths.bsky.social Integral, @susanwhitehouse.bsky.social & @mrsouthernmaths.bsky.social.

Wonderful resources to make it easy to plan for problem solving and modelling without endless exercises. ❤️ #alevelmaths
September 11, 2025 at 9:31 AM
mrsouthernmaths.bsky.social
#ALevelMaths
nathanday.bsky.social Nathan Day @nathanday.bsky.social · Sep 8
In #MathsToday, Year 12 and I enjoyed doing some Susan Wall tasks.

I particularly enjoyed this one. We matched the graphs up, and then found the coordinates of all the interesting points.
“Maths question titled ‘Which equation matches which graph?’ On the left, five quadratic equations are listed: (1) y = 6x – 3x² – 3, (2) y = x² – 2x + 5, (3) y = x² – 2x – 3, (4) y = 2x – x² + 3, (5) y = 3x² – 6x + 3. On the right, five parabolas are drawn on a coordinate grid, some opening upwards and some downwards, intersecting around the origin. The task is to match each equation to its corresponding parabola and explain the reasoning.”
September 9, 2025 at 5:19 PM
mrsouthernmaths.bsky.social
#ALevelMaths
tayyubmajeed.bsky.social Tayyub Majeed @tayyubmajeed.bsky.social · Sep 5
I have created a complete guide for the Casio fx-CG100 for A Level Maths and Further Maths.

Playlist: www.youtube.com/playlist?lis...

156 videos totaling 6+ hrs

Please share with students and teachers

#ALevelMaths #ALevelFurtherMaths
Casio fx-CG100 - YouTube
www.youtube.com
September 6, 2025 at 6:47 AM
mrsouthernmaths.bsky.social
#ALevelMaths
1stclassmaths.bsky.social 1st Class Maths @1stclassmaths.bsky.social · Sep 3
Did you know I've been working on A-level content? I've managed to cover all of year 1 statistics now including in depth videos (a little over 6 hours worth), exam questions and solutions on each topic (117 full exam questions in total). All free, of course.

www.1stclassmaths.com/alevelrevision
September 3, 2025 at 7:01 PM
Reposted by Rob Southern
draustinmaths.com
It's that time of year again - your annual reminder that if you're a Maths teacher and looking for suitable resources for your classes across KS3 to KS5 then do check out www.draustinmaths.com. The site is five years old this week 🎉🎉 and in that time it's amassed over 1000 resources! 1/3
August 31, 2025 at 1:32 PM
Reposted by Rob Southern
susanwhitehouse.bsky.social
Just a reminder that if you are about to start teaching #ALevelMaths, this book is available from the Mathematical Association @mathematicala.bsky.social online shop. In my completely unbiased opinion, it's really quite useful.
A picture of the book "Teaching A Level Maths: Content and Pedagogy"
August 28, 2025 at 2:09 PM
Reposted by Rob Southern
susanwhitehouse.bsky.social
I have been doing Paddy's problem solving questions every day this summer, and I have found a lot of them challenging. As well as enjoying them very much, they have helped me focus on how I teach problem-solving. Here are the top five things that I have come away with. #ALevelMaths
Five useful points when problem solving
August 26, 2025 at 12:59 PM
mrsouthernmaths.bsky.social
Happy "Jack Leach Day" to all who celebrate. #cricket
August 25, 2025 at 8:03 AM