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Will Orrick's user avatar
Will Orrick's user avatar
Will Orrick's user avatar
Will Orrick
  • Member for 10 years
  • Last seen this week
11 votes
Accepted

Understandable, interesting uses of Möbius inversion?

10 votes
Accepted

How to justify single digit answers to long problems?

9 votes

Simple combinatorics problems using division

8 votes

Do we need to practice equation derivation while learning math if equations will be chunked and automatized?

7 votes
Accepted

Reduction of fractions

6 votes

Which are the most used Greek letters in math textbooks?

5 votes

Definite integrals with equal limits

5 votes
Accepted

Finite sum of infinite series

5 votes

Explaining the "siblings" paradox

4 votes

Why do you need to distinguish between apparently identical objects in probability?

3 votes

Write $y=\sqrt{3+x}$ as the composite of two functions

3 votes

Any meaning/interpretation for $\frac{1}{0!}+\frac{1}{1!}+\frac{1}{2!}+\dots (= \mathrm e)$ (sum of reciprocals of factorials)?

3 votes

Why do we explicitly state the equality of two things when we know they're equal

3 votes
Accepted

Basic skill requirement suspension

3 votes

Motivating a definition of "gap" in a line just barely more advanced than the one used in the typical first-year calculus course

2 votes

Given a 3 4 5 triangle, how do you know that it is a right triangle?

2 votes
Accepted

How can one lone picture prove the Triangle Inequality, $|x−y|≤|x|+|y|$, $|x|−|y|≤|x−y|$, and the Reverse Triangle Inequality?

2 votes

Does induction really avoid proving an infinite number of claims?

2 votes

How does one tutor an A-level student past the derivative paradox?

2 votes

Explaining difference between improper integrals that converge and diverge

2 votes

Did Americans, before new math came in to schools, really say, 'three from two is nine carry the one", instead of borrowing ten from the tens column?

2 votes

How can I explain construction of the Bézout's identity to my kid?

1 vote

Trying to explain(understand?) combinations

1 vote

Effective Strategies for Helping Students Recognize Nonsensical Expressions? (HS - Undergrad Level)

1 vote

What's a replacement for "married couples" in combinatorics problems?

1 vote

How can 17 y.o. high school students intuit that P(n, r) stops at $n - (r - 1)$, not $n - r$?

0 votes

What are some famous problems, which are not difficult to understand, for senior high school students

0 votes

What books teach the formula for the # of k-permutations of n objects, with x types, and $r_1,⋯,r_x$ = the number of each type of object?