Richard Perring
banner
learningmaths.bsky.social
Richard Perring
@learningmaths.bsky.social
Maths, education and maths education.
(occasionally puns and cream tea arguments)

Associate Deputy Director Secondary, NCETM | Assistant Maths Hub Lead | General Council, ATM.

Opinions my own
1. Blinder by the hour - The Triffids
2. I just get caught out - The Go-betweens
3. Into my arms - Nick Cave
4. Everything I’ve got belongs to you - Ed Kuepper
5. Confide in me - Kylie

#FridayFive
November 7, 2025 at 6:09 PM
That’s how a couple of people in the team did it.
There was a lot of listing and column addition from people too.
I did 30x10 + 6 - 2 which is, I think, clunkier than your method.
October 28, 2025 at 7:41 AM
1. Racheland. Jazz Butcher
2. Into My Arms. Nick Cave
3. On Obsession. Peter Blegvad
4. Cry Cry. Mazzy Star
5. I Guess That's Why They Call it the Blues. Elton John
#FridayFive
October 24, 2025 at 3:51 PM
I think this is the way of thinking that was helpful when thinking about division with double number lines
October 20, 2025 at 5:19 PM
Reposted by Richard Perring
One way of thinking of a division A÷B is to find a way to change B to 1.
In the case of 21÷3, say, we get 21/3 ÷ 3/3 = 7÷1 = 7;
in the case of 3/4 ÷ 1/4 we get 3/4 * 4 ÷ 1/4 * 4 = 3÷1 = 3.
Put another way,
If 3 shares are 21, what is 1 share?
If 1/4 share is 3/4, what is 1 share?
[Useful?? Dunno!]
October 20, 2025 at 4:17 PM
Reposted by Richard Perring
One quarter of a number is three quarters.
Two quarters of a number is six quarters.
Three quarters of a number is nine quarters.
Four quarters of a number is twelve quarters.
October 20, 2025 at 11:40 AM
Reposted by Richard Perring
The follow up in my head was what is one quarter, three quarters of, and I actually love this answer and the generalisation that ensues
October 19, 2025 at 9:19 PM
‘We’ enjoyed this one a whole lot…
October 19, 2025 at 8:31 PM
Reposted by Richard Perring
… So, with maths particularly, if there was a way to pick the most important bits, and just do those, a student may get a 4/5 whereas when doing more they get a 3 because no time to consolidate. So a half at 5 may be more valuable than full at 3.
October 11, 2025 at 11:17 AM