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Joseph O'Rourke's user avatar
Joseph O'Rourke's user avatar
Joseph O'Rourke's user avatar
Joseph O'Rourke
  • Member for 10 years, 2 months
  • Last seen this week
4 votes
0 answers
133 views

When can students understand the intersection of two circles?

8 votes
10 answers
2k views

How to explain (FALSE => TRUE) is TRUE [duplicate]

3 votes
0 answers
118 views

Books with Glossaries

6 votes
2 answers
367 views

Demarcated "Proof Idea"

4 votes
2 answers
1k views

Is the Wronskian still assumed for graduate education?

17 votes
11 answers
2k views

Natural occurrences of a to the (b to the c)?

3 votes
4 answers
893 views

What is an algebraic explanation of why the product of the slopes of perpendicular lines is $-1$? [duplicate]

1 vote
3 answers
704 views

When are students taught implicit and parametric representations of curves?

4 votes
2 answers
620 views

Advice: How to cite literature for high-school students?

10 votes
1 answer
281 views

College undergraduate geometry courses

7 votes
1 answer
241 views

Solving open problems through a misunderstanding

11 votes
11 answers
4k views

Ideas for explaining 4D and higher dimensions

6 votes
0 answers
219 views

Tablet whiteboard app w e-pencil

23 votes
2 answers
2k views

Can we avoid confusion over using "let" as a quantifier?

9 votes
2 answers
405 views

Fear of 3-dimensions

20 votes
4 answers
3k views

Does anyone teach logarithms via slide rules?

6 votes
3 answers
382 views

Cardinal vs. ordinal: When learned? When needed?

4 votes
1 answer
496 views

Cinderella vs. GeoGebra

40 votes
13 answers
5k views

Beautiful planar geometry theorems not encountered in high school

4 votes
1 answer
342 views

The most transparent exposition of Bayes' Theorem

18 votes
5 answers
14k views

What is the most difficult concept to grasp in Calculus 1?

10 votes
1 answer
200 views

Motivation vs. Rigor

10 votes
0 answers
703 views

Use of Lockhart's *Measurement* in a course?

7 votes
3 answers
275 views

Why is it difficult to freely change between points and vectors?

2 votes
0 answers
116 views

Tactile Learning Activities in Mathematics

15 votes
6 answers
2k views

Iconic image to explain the fundamental theorem of calculus?

7 votes
4 answers
329 views

Beyond cubic polynomials: Applications?

9 votes
5 answers
1k views

Motivation for polynomial long division

5 votes
2 answers
367 views

Trends in math education: Majors? Applied math? Statistics?

5 votes
0 answers
172 views

Intuition: 5 regular polyhedra, 6 regular 4-polytopes, and then 3 regular d-polytopes