Skip to main content
Daniel Hast's user avatar
Daniel Hast's user avatar
Daniel Hast's user avatar
Daniel Hast
  • Member for 9 years, 5 months
  • Last seen more than a month ago
85 votes
Accepted

Issues with "equals", where does this come from and how do I combat it?

52 votes

Proof of why BODMAS (or BIDMAS) works?

46 votes

Why should kids learn how to use a compass and straightedge, and not rely on a drawing program?

41 votes

Can mathematics be learned by ONLY solving problems?

33 votes
Accepted

What is the proper way to ask a "find the domain" question?

23 votes
Accepted

Should we tell students to never replace parts of an expression by their limits when taking a limit?

22 votes

A Non-Unique Factorization of Integers!

17 votes
Accepted

How to teach students when they can and can't cancel factors in a fraction?

16 votes

Difference in meaning of 'algebra'

12 votes

Factoring quadratics where the coefficient on the $x^2$ term does not equal 1

11 votes

How to explain what is wrong in this "proof" that $\sqrt N$ must be irrational?

11 votes
Accepted

Solving a Polar set of equations algebraically?

11 votes

Good way to explain fundamental theorem of arithmetic?

11 votes

What is a better way to explain these claims about limit are not true in general?

9 votes

When two equivalent algebraic statements have two "different" meanings

9 votes
Accepted

Problem "seeing" the perimeter of a figure

9 votes
Accepted

How do you explain the whole integer and fractions subject to a kid in 6th grade?

8 votes
Accepted

Rules to eliminate erroneous solutions in Trig equations?

6 votes
Accepted

Definition of root of equation/expression

6 votes
Accepted

Explaining genus to students

5 votes

Complex numbers and encourage justification

4 votes
Accepted

How to explain this trigonometric problem properly?

4 votes

Is the Nomenclature of Triangle Congruency Proofs Consistent?

4 votes

What is a good way to explain the slightly different kinds of continuity?

3 votes

Is simplifying a rational function considered as a continuous extension?

3 votes

Geometric intuition for $D(e^x) = e^x$

2 votes

What is the intuition behind the limit superior?

2 votes

Explaining the order of negative integers

0 votes

Vector calculus texts that are free-as-in-speech?