User Joseph O'Rourke - Mathematics Educators Stack Exchange

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Joseph O'Rourke

Member for 9 years, 2 months
Last seen more than a week ago

Twitter
cs.smith.edu/~jorourke
Northampton, MA, USA

52 Questions

Score Activity Newest Views

5 votes

1 answer

275 views

Demarcated "Proof Idea"

asked May 27 at 17:23

21 votes

2 answers

1k views

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

asked Feb 24, 2020 at 0:00

46 votes

18 answers

12k views

How to explain the flipping of division by a fraction?

asked Apr 9, 2015 at 21:12

82 votes

21 answers

24k views

Why are induction proofs so challenging for students?

asked Nov 18, 2015 at 16:32

3 votes

1 answer

461 views

Calculus via a constructivist approach

asked May 19, 2018 at 0:47

11 votes

11 answers

4k views

Ideas for explaining 4D and higher dimensions

asked Apr 5, 2020 at 23:43

12 votes

8 answers

793 views

How best to explain the logarithm to the mathematically naive?

asked May 24, 2015 at 23:43

4 votes

2 answers

1k views

Is the Wronskian still assumed for graduate education?

asked May 19, 2022 at 23:46

16 votes

6 answers

10k views

Explanation for cutting a Möbius strip at one-third its width

asked Feb 11, 2015 at 1:54

15 votes

6 answers

1k views

Iconic image to explain the fundamental theorem of calculus?

asked Oct 11, 2018 at 23:06

37 votes

12 answers

5k views

Beautiful planar geometry theorems not encountered in high school

asked Nov 15, 2019 at 23:49

34 votes

15 answers

9k views

Justifications for: Why learn mathematics?

asked May 10, 2015 at 21:07

16 votes

11 answers

2k views

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

asked Mar 19, 2021 at 0:16

24 votes

1 answer

728 views

Is there a Piagetian age at which proofs can be comprehended?

asked Apr 18, 2015 at 2:28

1 vote

3 answers

505 views

When are students taught implicit and parametric representations of curves?

asked Nov 2, 2020 at 21:01

3 votes

4 answers

702 views

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

asked Nov 14, 2020 at 1:22

4 votes

2 answers

609 views

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

asked Oct 17, 2020 at 23:49

4 votes

1 answer

429 views

Cinderella vs. GeoGebra

asked Nov 28, 2019 at 1:09

10 votes

1 answer

249 views

College undergraduate geometry courses

asked Sep 20, 2020 at 1:07

7 votes

1 answer

204 views

Solving open problems through a misunderstanding

asked May 12, 2020 at 21:44

6 votes

0 answers

209 views

Tablet whiteboard app w e-pencil

asked Mar 15, 2020 at 20:13

20 votes

3 answers

5k views

Pedagogical challenge: Homeomorphic vs. Homotopy equivalent vs. Homologous?

asked Jul 16, 2014 at 23:31

9 votes

2 answers

401 views

Fear of 3-dimensions

asked Feb 9, 2020 at 0:25

19 votes

4 answers

3k views

Does anyone teach logarithms via slide rules?

asked Jan 2, 2020 at 23:54

6 votes

3 answers

361 views

Cardinal vs. ordinal: When learned? When needed?

asked Dec 18, 2019 at 14:26

17 votes

5 answers

12k views

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

asked Aug 14, 2019 at 12:53

4 votes

1 answer

336 views

The most transparent exposition of Bayes' Theorem

asked Aug 24, 2019 at 20:48

14 votes

4 answers

912 views

Proofs that make theorems less clear

asked Mar 13, 2016 at 0:27

13 votes

4 answers

405 views

Collaboration on math homework assignments?

asked Jan 4, 2016 at 17:26

4 votes

3 answers

287 views

Explanation challenge: Why is a spiral ray-gun difficult to aim?

asked Oct 9, 2014 at 0:04

1