Wrote Maths Medicine. Rumoured to be called Sigi, after Sigismund (hello surds, hello pi) Arbuthnot, and to have personated Dietmar Küchemann on occasions.

UK
Joined January 2012
To all my former Twitter pals who are still glued to this nasty platform, SEASON'S GREETINGS part 1 [part 2 tomorrow]
2
1
3
690
SEASON'S GREETINGS part 2
1
1
1
259
Have had a quick peak at Twitter again, after several months' absence. It's like walking on beautiful Wandsworth Common in the days before Poop Bags. Why aren't more of you maths ed people on BlueSky?
1
1
3
333
If you've bought ALGEBRADABRA from ATM, then you might find the student book useful: it contains the 100 algebra items but without the commentary. UK teachers can order a 'FREE' copy of the student book from Dexter Graphics for just the cost of postage: mathsmed.co.uk/ALGE/dabra-or…
1
3
525
Professor Smudge retweeted
If you have bought ALGEBRADABRA from ATM, then you might find the student book useful: it contains the 100 algebra items but without the commentary. UK teachers can order a 'FREE' copy of the student book from Dexter Graphics for just the cost of postage: mathsmed.co.uk/ALGE/dabra-or…
4
2
717
If you have bought ALGEBRADABRA from ATM, then you might find the student book useful: it contains the 100 algebra items but without the commentary. UK teachers can order a 'FREE' copy of the student book from Dexter Graphics for just the cost of postage: mathsmed.co.uk/ALGE/dabra-or…
4
2
717
Fractions - not just for Christmas! Read the whole blog via bsky:
1
1
339
BluSky seems to have been reduced to a trickle. I'm enjoying not reading the X-Tweets, but has everyone else been sucked back in?!
1
3
463
A fractions task? Find out more on my bluesky account.
1
5
8
1,897
Week 19. Having learnt to divide by 2/9 we move on to 3/7. When will it ever stop? More in the SatisFraction blog, via bluesky
1
2
3
502
Week 20, the final week, with some remainders.... More in the blog,via bluesky.
1
172
Professor Smudge retweeted
Week 19. Having learnt to divide by 2/9 we move on to 3/7. When will it ever stop? More in the SatisFraction blog, via bluesky
1
2
3
502
Professor Smudge retweeted
Week 17. The orange region seems to look larger, but maths tells me it's not! More in my blog (via bluesky)
2
2
2
344
Professor Smudge retweeted
Week 16. More of of.... And more of of in the blog [link on b-sky]
2
2
364
Professor Smudge retweeted
Week 13. Still about sharing... More on bluesky
1
2
1
410