Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [education]

For math questions related to the teaching and learning of mathematics. Note that Mathematics Educators Stack Exchange may be a better home for narrowly scoped questions on specific issues in mathematics education.

This tag is for questions that are primarily about mathematics, but are related to mathematics education. Also consider using the or the tag. On the other hand, questions that are primarily about teaching and learning mathematics would be a better fit for MathEducators.SE.

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Any good way to teach $(-1)\times (-1) =1$ in elementary school?

students usually are unwilling to accept that $(-a) \times (-b)= a \times b$, or $(-1)\times (-1) =1$ in elementary school. Any good way to teach them such knowledge? BTW: This $(-1)\times (-1) =1$ can not be proved, it is just extension of ring, so…
XL _At_Here_There
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Scale versus Precision

I've been trying to work out the difference between scale and precision in relation to decimal numbers. Google Precision is the number of digits in a number. Scale is the number of digits to the right of the decimal point in a number. For example,…
Matthew Layton
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number leaving different remainders with different divisors

number when divided by 17 leaves remainder 3 and when divided by 16 leaves remainder 10 and is divisible by 15 find the smallest number in the series i tried the conventional method but it gave me wrong answer so please help
Hemanth Kumar
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How to understand the words "More algebraically"

How to understand the words More algebraically When seeing one proof about the theorem that rational set is countable, I saw this More algebraically , but less clearly, an explicit one-to-one onto map $f:N\times N\to…
HyperGroups
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Does $x = \left(x + \frac {(y - x)} 2\right)$ go on forever?

Basically, if you have x which lets say is 50 and y is 100. Now if I were to keep doing $x = \left(x + \dfrac {(y - x)} 2\right)$ until x = y would it be going forever? And if not, when will it stop? I'd think this can't go on forever because…
user82779
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Which is the correct formula for compound interest when time period in t years and m months

I have two formula to calculate compound interest if period is t years and m months. $$CI =P(1+\frac{R}{100})^T [1+\frac{mR}{1200}] $$ and $CI=P(1+\frac{R}{100})^T$ Now I have a question where Principal amount is 15000, R = 6% and Time is 2 year and…
Sagar Rawal
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Advice for which "advanced math" topic for a self-taught student to start with? (number theory, group theory, probability, etc)

Since I have been doing contest-math for a very long time, I want to try out more advanced math. Now the term "Advanced math" is a bit vague. I want to learn Analytic number theory group theory probabilistic methods Topology Being a self-taught…
Sunaina Pati
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Bookwork Preparation for Exams

Has anyone got advice for learning bookwork. I have one particular module which is absolutely full of it. Currently I keep looking at it over and over but 'the tricks' aren't sticking.
Kane Blackburn
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How would you position the UK Open University's math BSc programme in the realm of math BSc's?

I hope this question fits the format here; at least there is an "education" tag defined. The Open University has a "BSc Honours" degree in mathematics, having its programme of study detailed through here. The courses, divided into modules, are…
matanox
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looking for guidance in my road to pure mathematics

During my teenage years I got into arts and slowly but surely I continue to pursue different art forms (poetry, music, painting, photography, etc) but it was just recently that I got interested in mathematics. I used to hate it in high school,…
J Xavier Rivera
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Are you allowed to rearrange terms on the same side of an equation if its subtraction

This is a basic one but I encountered this and was wondering how it makes sense. \begin{align} 2x + 3y & = 9 &&\text{Rearrange into the form y=mx+c :} \tag 1\\ 3y & = 9 - 2x && \text{} \tag 2\\ y & = \frac{9}{3} -\frac{2}{3}x & && \text{} …
user827090
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Math Symbol in Equation

I want to ask, what is the meaning of this symbol in red circle?
Wind
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Bob has no less than 50 $2 coins in a bag. After organizing it he finds there are no remainders whether it's 6 or 8 coins per row.

Bob has no less than 50 $2 coins in a bag. After organizing them, he finds that there are no remainders whether it's 6 or 8 coins per row. What is the minimum total value of the coins? Saw it on TV and the answer is $144. I can't seem to solve it…
akira
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what are the rules/rationale for "simplifying" negative denominators

So I'm losing my mind trying to understand the rules and rationale behind "simplifying" expressions and equations in Algebra. It's been decades since I've had to study for it (going back and rehashing it out at Khan Academy) and I just don't…
michael t
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Consider a sequence $0, 1, 2, 1, 2,···$

Consider a sequence $0, 1, 2, 1, 2,···$. Explain why any sequence ${x_k}$ with the property $x_k =$ $1$ or $ 2$ for each $k$ , is a subsequence of this sequence. I have tried to use the Bolzano-Weierstrass theorem but I am not sure if it is…
Zehra Huseynova
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