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67
Why is it possible to teach real numbers before even rigorously defining them?
matheducators.stackexchange.com

27
How to respond to “solve this equation” in a basic algebra class
matheducators.stackexchange.com

22
Given a 3 4 5 triangle, how do you know that it is a right triangle?
matheducators.stackexchange.com

20
Is there a more telling name for "Calculus 2"?
matheducators.stackexchange.com

18
How to explain that the sums of numerators over sums of denominators isn't the same as the mean of ratios?
matheducators.stackexchange.com

16
Formal Definition of Dot Product
physics.stackexchange.com

14
Why do we teach even and odd functions?
matheducators.stackexchange.com

13
Should $\varphi$ be monotone in the integration by substitution?
matheducators.stackexchange.com

13
Why do we teach the Rational Root Theorem? (high school algebra 2)
matheducators.stackexchange.com

12
Lowercase vs. uppercase letters for matrix entries
matheducators.stackexchange.com

12
A parabolic arc is not semicircular. But students think so
matheducators.stackexchange.com

11
Write $y=\sqrt{3+x}$ as the composite of two functions
matheducators.stackexchange.com

11
Ideas for explaining 4D and higher dimensions
matheducators.stackexchange.com

11
Why the fear of polynomial long division?
matheducators.stackexchange.com

10
What are some research-level opportunities in mathematics that do not focus on proofs?
matheducators.stackexchange.com

10
Skipping a calculus topic (squeeze theorem)
matheducators.stackexchange.com

10
How do you explain why perpendicular lines have negative reciprocated slopes?
matheducators.stackexchange.com

10
Why would you teach Calculus before teaching Real Analysis?
matheducators.stackexchange.com

9
Teaching math too soon in middle school and high school
matheducators.stackexchange.com

9
Why are induction proofs so challenging for students?
matheducators.stackexchange.com

9
I want a "true" proof by contradiction of an implication P => Q
matheducators.stackexchange.com

9
How can I explain why numerical integration is easy, but symbolic integration is hard?
matheducators.stackexchange.com

9
How to make students comfortable with the use of axiom of choice in analysis
matheducators.stackexchange.com

9
In what curricula are "rectangles" defined so as to exclude squares?
matheducators.stackexchange.com

9
Why should or shouldn't we teach functions to 15 year olds?
matheducators.stackexchange.com

8
Fear of 3-dimensions
matheducators.stackexchange.com

8
An intuitive explanation of l'Hôpital's rule for ∞/∞
matheducators.stackexchange.com

8
Determining the first digit of the Quotient using hand long division efficiently?
matheducators.stackexchange.com

8
Why does the widespread erroneous definition of "irrational number" persist without being taught?
matheducators.stackexchange.com

8
How to solve the problem of Wolfram Alpha?
matheducators.stackexchange.com

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