Paddy MacMahon
@paddymacmahon.com
Head of Maths at Latymer Upper School
paddymacmahon.com
OCR, Cambridge International and AQA associate, Desmos and Google Colab enthusiast
paddymacmahon.com
OCR, Cambridge International and AQA associate, Desmos and Google Colab enthusiast
I reckon so. Orders of magnitude-wise, I reckon you've got until around 3 hours 10 minutes. Go beyond that, and you're in 'about 10 hours' territory...
November 9, 2025 at 3:21 PM
I reckon so. Orders of magnitude-wise, I reckon you've got until around 3 hours 10 minutes. Go beyond that, and you're in 'about 10 hours' territory...
My tax code reduces my tax-free allowance *and also* the 20%/40% threshold. So its not income up to £50270 that's taxed at 20%, but my first £37700 of taxable income.
November 7, 2025 at 12:33 PM
My tax code reduces my tax-free allowance *and also* the 20%/40% threshold. So its not income up to £50270 that's taxed at 20%, but my first £37700 of taxable income.
Some nice extension work (off-spec) here:
www.paddymacmahon.com/year-11-lock...
Can be worked through fairly independently.
www.paddymacmahon.com/year-11-lock...
Can be worked through fairly independently.
paddy macmahon - year 11 lockdown course
I wrote this course in 2020 for Year 11 pupils at Latymer Upper School. The national lockdown meant their GCSE exams didn't take place, and they were working remotely. Rather than simply give them the...
www.paddymacmahon.com
November 4, 2025 at 4:31 PM
Some nice extension work (off-spec) here:
www.paddymacmahon.com/year-11-lock...
Can be worked through fairly independently.
www.paddymacmahon.com/year-11-lock...
Can be worked through fairly independently.
30%of 50 is 50%of 30, which is 15.
November 3, 2025 at 6:26 PM
30%of 50 is 50%of 30, which is 15.
It's definitely expected by OCR that students should solve cubics using their calculators...
October 27, 2025 at 4:58 AM
It's definitely expected by OCR that students should solve cubics using their calculators...
This was my approach - a compound angle formula with tan. Came out quickly, but I was slightly unsatisfied... seems like advanced techniques (like calculus or advanced trig) shouldn't be needed...
October 27, 2025 at 4:42 AM
This was my approach - a compound angle formula with tan. Came out quickly, but I was slightly unsatisfied... seems like advanced techniques (like calculus or advanced trig) shouldn't be needed...
Yeah, teeming down here in Kampala too. But it was 30° and sunny earlier, and probably will be again later...!
October 20, 2025 at 11:29 AM
Yeah, teeming down here in Kampala too. But it was 30° and sunny earlier, and probably will be again later...!
No rush - I'll be on a school trip until the 29th.
October 18, 2025 at 12:17 PM
No rush - I'll be on a school trip until the 29th.
We teach it 6x45 minutes per fortnight, over two years. I think that's ample time...
October 18, 2025 at 10:51 AM
We teach it 6x45 minutes per fortnight, over two years. I think that's ample time...
Yeah, please do. I've used the book a bit, but am trying to develop a scheme of work incorporating/overlapping with everything they need to cover. And including discussion of data/maths in the news. And lots of spreadsheet work.
October 18, 2025 at 10:50 AM
Yeah, please do. I've used the book a bit, but am trying to develop a scheme of work incorporating/overlapping with everything they need to cover. And including discussion of data/maths in the news. And lots of spreadsheet work.
Yes. Teaching it for the first time this year...
October 17, 2025 at 5:55 PM
Yes. Teaching it for the first time this year...
Lovely idea! Glad it went well!
October 15, 2025 at 10:51 AM
Lovely idea! Glad it went well!
6 miles in 5 minutes is 6*6/5 miles in 6 minutes, and this is 36/5 which is more than 7. So 6 miles in 5 minutes is quicker.
October 13, 2025 at 7:36 PM
6 miles in 5 minutes is 6*6/5 miles in 6 minutes, and this is 36/5 which is more than 7. So 6 miles in 5 minutes is quicker.
Hold that thought... Looks like I might have one reserve that I haven't used yet...!
October 13, 2025 at 5:11 PM
Hold that thought... Looks like I might have one reserve that I haven't used yet...!
Not yet... I'm full of cold and have got a really hectic few days... I'll try to write one on the tube home...!
October 13, 2025 at 5:07 PM
Not yet... I'm full of cold and have got a really hectic few days... I'll try to write one on the tube home...!