Skip to main content
Mathematics Educators
Dag Oskar Madsen's user avatar
Dag Oskar Madsen's user avatar
Dag Oskar Madsen's user avatar
Dag Oskar Madsen
  • Member for 10 years, 6 months
  • Last seen more than a week ago
Profile Activity
Stats
2,591
reputation
76k
reached
17
answers
5
questions
Communities
View all
About

PhD in Mathematics (NTNU, Trondheim, Norway 2002)

FIDE Master in Chess

Badges
View all badges
2
gold badges
20
silver badges
34
bronze badges
Top tags
View all tags
112
Score
8
Posts
36
Posts %
81
Score
4
Posts
18
Posts %
44
Score
6
Posts
27
Posts %
27
Score
3
Posts
14
Posts %
12
Score
4
Posts
18
Posts %
12
Score
2
Posts
9
Posts %
Top posts
View all questions and answers
answer
63
Unique candidate that fails
Sep 21, 2014
answer
23
How do you explain why perpendicular lines have negative reciprocated slopes?
Sep 30, 2015
answer
21
Where does the word "roots" come from when talking about zeros
Sep 30, 2014
question
13
How to think mathematically?
Oct 6, 2015
answer
12
Is there a literature database like MathSciNet for Mathematics Education?
Apr 16, 2016
answer
11
Greatest common divisor applications
Mar 12, 2017
answer
10
What is a good prototypical example of a construction that is not well-defined?
Aug 22, 2014
question
10
What is the difference between "numeracy" and "number sense"?
May 27, 2017
answer
10
Real-world examples of more "obscure" geometric figures
Apr 1, 2015
question
7
Job boards for university positions in Math Education?
Sep 4, 2016
Top network posts
View all network posts
28
Short exact sequences every mathematician should know
28
Is there any position where not promoting (illegally) would be the best move?
23
Pawn Promotion Endgame Problem-White to move and mate in 1
23
Why does Fritz prefer underpromotion in this position?
23
Is it possible for a white piece to deliver check to the black king, but for black's counter move to result in white getting checkmated?