Steve Walker

Double Double quiz and puzzle;
Fire burn and cauldron bubble.
Spooky sums that have no fear;
Halloween Maths is waiting here:

www.transum.org/Software/SW/...

#mathsresources #mathschat #mathstoday #mathchat #lessonstarter

In #MathsToday I can see that the questions from #MathsA #ALevel #ASLevel #H240 #H230 papers are available on #ExamBuilder.

Talk to your Exams Officer for access.

www.ocr.org.uk/qualificatio...

#UKMathsChat

✨ Reception maths in action!

👀 Our Director, Charlie Stripp, joined pupils using their 'fast eyes' to spot numbers and show them on their fingers in a Mastering Number session.

(We’re sure there’s a scale factor question in this photo somewhere…🪑)

#Maths #EduSky #UKMathsChat

Q3 from 2025 Junior Maths Challenge. How many of the following are factors of 2025? List 15, 25, 45, 75, 225. A: 1, B: 2, C: 3, D: 4, E: 5

I always found it an interesting challenge for students to try and predict the year related question that almost always appears.

Here is the 2025 Junior Maths Challenge question.
What do you think will be in the 2026 paper?

Five integers (a, b, c, d and e) have a mean of 0, a median of 1 and a range of 9. The squares of these five integers (a^2, b^2, c^2, d^2 and e^2) have a mean of 10, a median of 4 and a range of 24. What is the value of a, b, c, d and e.

Better late than never, the #OCRMathsPuzzle for this week.

What is the value of a, b, c, d and e?

For some of you - I hope the half term break was relaxing. For the rest of you - have a good break next week.

#UKMathsChat #RecreationalMath #Algebra #Statistics

Diagram A has a white circle inside a shaded square. Diagram B is a white square inside a shaded circle. In both diagrams, the inner shape just touches the perimeter of the outer shape. Which diagram has the greater fraction of its area shaded?

For #MathsToday, here is this week's #OCRMathsPuzzle!

Which diagram has the greater fraction of its area shaded?

Have a great weekend.

#UKMathsChat #RecreationalMath #Geometry #Area #Fractions #IrrationalNumbers

Cambridge OCR Mathematics image

Looking to take the next step in your #ALevel #Maths teaching career?

Register for examiner roles for AS/A Level Mathematics and AS/A Level Further Mathematics.

ow.ly/QHIF50XcqpU

#UKMathsChat

@cambridgeocr.bsky.social

Check out our latest blog.

🚀 Starting #ALevel #Maths?
Algebra is key for success.

I take a look at where students struggle and discuss ideas that might help.
📖 Blog: ow.ly/hxj050Xb5s0

🔁 Revisit GCSE skills
🗣️ Encourage discussion
📊 Use graphing tools
💪 Build confidence through purposeful practice

#UKMathsChat #MathsToday

Neil and Steven at the MathsConf39 on the Cambridge OCR stand.

In #MathsToday Cambridge OCR at #MathsConf39.

Drop by to talk all things #ALevel #GCSE #FSMQ #CoreMaths #ELC.

@cambridgeocr.bsky.social

Cambridge OCR stock promotional image

Busy calendar next week.
Exam Review webinar events.

📆 13 Oct 4pm - 6pm Core Maths A & B
📆 14 Oct 4pm - 5pm A Level Further Maths A & B Pure
📆 15 Oct 4pm - 5.30pm GCSE Higher Tier
📆 16 Oct 4pm - 5.30pm A Level Maths A H240

Sign up: ow.ly/25Uk50X9R48
#UKMathsChat #CoreMaths #ALevel #GCSE

Image describes the geometric problem. The vertices of a square just touch four edges of a regular octagon. The area of the square is 32 cm squared. Work out the area of the regular octagon.

Here's our #OCRMathsPuzzle to end this week. 🙂

The vertices of a square just touch four edges of a regular octagon, as below.
The area of the square is 32 cm^2.

Work out the area of the regular octagon.

#MathsToday #UKMathsChat #RecreationalMath #geometry #area

or 1 x (987 + 3 + 4 + 6) / (2 x 5) but still using brackets 🥲

Thought I had a nice solution

2x(3x5+7+8+1+9+4+6)=100
but brackets not allowed 🥲

Two circles are drawn, with centres C and M and their circumferences just touching. Equilateral triangle ABC is drawn over the circles, where M is the midpoint of AB and A and B are points on circles M's circumference. Work out the ratio of the area of Circle M : the area of circle C in the form 1:n, giving n as an exact value.

Here's this week's edition of #OCRMathsPuzzle! 😀

Work out the ratio of the area of circle M : the area of circle C in the form 1: n, giving n as an exact value.

Have a great weekend!

#UKMathsChat #MathsToday #MathSky #resources #puzzle

In #MathsToday, been preparing for @cambridgeocr.bsky.social #ALevel #Maths teacher network later this afternoon.

sign up: teach.ocr.org.uk/teacher-netw...

Don't forget the Teacher networks this week.
teach.ocr.org.uk/teacher-netw...

GCSE tonight 1 October 4pm - 5pm
A level tomorrow 2 October 4pm - 4:45pm

Cambridge OCR Maths image

In #MathsToday just enjoyed the 'Starting to Teach' session for Maths B (MEI) H640.

Great to hear a current classroom teacher walking us through the spec, exam criteria, and teaching ideas.

#MathsA session
12 Nov 4pm
Sign up: ow.ly/90rn50X4oIt

#UKMathsChat

Cambridge OCR Maths image

Looking to develop your Maths assessment career?

Cambridge OCR is recruiting a Principal Examiner for A Level Further Maths B (MEI) – Statistics Major.

For more details and to apply: assessors.cambridge.org

#UKMathsChat #statistics #ALevel #FurtherMaths
@cambridgeocr.bsky.social

Cambridge OCR Maths logo.

In #MathsToday been looking through summer 2025 papers in preparation for Teacher Network on Thursday.

2 Oct 4pm - 4:45pm
Register here: events.teams.microsoft.com/event/71ee65...

Discussion of the summer 2025 papers
Highlight trends
Identify topics that students found challenging.

#UKMathsChat

Image as described in the text. The grid is a 3 column by 3 row square grid.

Here's the #OCRMathsPuzzle for this weekend. 😀

Place nine different values that have a range (largest – smallest) of 8 into the grid below, so that the sum of each row, the sum of each column and the sum of each diagonal are all 26.

#MathsToday #UKMathsChat #teacher #puzzle #resource #fractions

Image showing the Factor tree of 60 solved in two different ways. Method one using systematic approach, starting with 2 and then progressing through increasing prime numbers as appropriate. Solution 60 = 2 x 2 x 3 x 5. Method 2 using number bond knowledge and recall of previous work, so 60 = 5 x 12 and remembering that 12 decomposes to 2 x 2 x 3. Solution 60 = 5 x 2 x 2 x 3.

I thought the controversy was over using Venn Diagrams in this way - with repeated prime factors used as different elements.
My preference was always Trees simply because it seems easier in this format for students to check their own work. The structure is the working and short cuts are possible.

Ritangle 2025. Registrations open 8 October. Delivered by MEI.

Are your maths students ready for a challenge?

Ritangle is back for 2025, and you’ll be able to register your team from 8 October!

Keep an eye out for further details.

#Ritangle #MathsChallenge

Should stress that I meant the common misconceptions and mistakes seen by assessors when marking candidate responses to exam questions.

Cambridge OCR Maths logo. Student working through Maths problems and making efficient use of their calculator.

In #MathsToday I Explore permutations & combinations in #Level3 #FSMQ

New blog highlighting common misconceptions and mistakes seen on exam questions.

👉 Read more ow.ly/970150X1tmT

#UKMathsChat #enrichment #permutations #combinations

Are you teaching OCR A Level Further Mathematics A (H245)?

Join our ‘Starting to Teach’ event, led by an experienced assessor, for fresh ideas and practical support.

ow.ly/ZrnC50X0MPP
Free Webinar Thursday 24 Sept 4 - 6pm.
Register to attend, or to listen to the recording.

#UKMathsChat #ALevel

Diagram as described in text. 8 connected small circles surrounding a larger central circle. Larger circle encloses the arrangement.

Here's this week's #OCRMathsPuzzle.

The cross-section of a telecommunication cable is eight small circular cables around a central circular cable.

The diameter of each small cable is 4 cm.

Work out the diameter of the central circular cable.

#puzzle #UKMathsChat #MathsToday #MathSky #iTeachMath

Looking to develop your Maths teaching career into assessment?

Cambridge OCR is recruiting now for authors, test constructors and Principal Examiners.

For more details, search 'Math': ow.ly/889h50WYKhx

#ALevel #CoreMaths #Maths #FurtherMaths
#MathsToday #UKMathsChat

My original working can be seen here: www.desmos.com/calculator/l...
@desmos.com

But other exact solutions are available.

Nice. The beauty of maths never ceases to amaze me.

The perimeter is exactly 38 cm so the sides must be rational.