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Mathematics Educators
Adam Rubinson's user avatar
Adam Rubinson's user avatar
Adam Rubinson's user avatar
Adam Rubinson
  • Member for 4 years, 10 months
  • Last seen more than a week ago
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Top posts
View all questions and answers
22
Student asked me if it is necessary to simplify fractions at the end of answering a question. I'm not sure how to respond
Nov 12, 2021
11
For students who don't have instant recall with basic arithmetic, should I be stubborn about training them to have instant recall before moving on?
Jun 16, 2022
8
What is the expected fluency with fractions at UK key stage 3?
Aug 7, 2021
7
Why do we write $x$ instead of $1x$?
Apr 30, 2021
6
Should/ how should I help students reframe their negative thoughts about their own mathematical abilities?
Aug 12, 2022
6
How to explain to a ~$12-16$ year-old student who is weak at maths, that $\ 38 \times 27 \times 14 = 27 \times 14 \times 38$?
Dec 12, 2022
5
Trade-off between writing neatly vs scribbling (scribbling aims to maximise working memory)
Mar 17
3
"Table" method for expanding brackets vs "each term in the first bracket gets multiplied by each term in the second bracket"
Oct 6, 2019
3
"Rough subitising / estimation" for better intuition and ability to apply arithmetic
Apr 30, 2021
2
Scepticism as the cornerstone for not making mistakes in arithmetic/algebra etc, especially for students who relentlessly make every possible error
Aug 21, 2023
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28
Proving that closed (and open) balls are convex
25
Can every terminating rational number be approximated with a square root?
24
Does there exist $\ n,m\in\mathbb{N}\ $ such that $\ \left\lvert \left(\frac{3}{2}\right)^n - 2^m \right\rvert < \frac{1}{4}\ $?
23
Collatz conjecture but with $n^2-1$ instead of $3n+1.$ Does the sequence starting with $13$ go to infinity?
19
Let $A\subset\mathbb{R}$ be an uncountable set of irrational numbers. Does there exist a finite $B\subset A$ such that $\sum_{x\in B} x\in\mathbb{Q}?$