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 8 years, 6 months
  • Last seen more than a week ago
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About

PhD in Mathematics (NTNU, Trondheim, Norway 2002)

FIDE Master in Chess

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Top posts
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All Questions Answers
Score Newest
answer
59
Unique candidate that fails
Sep 21, 2014
answer
22
How do you explain why perpendicular lines have negative reciprocated slopes?
Sep 30, 2015
answer
19
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
9
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
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28
Is there any position where not promoting (illegally) would be the best move?
28
Short exact sequences every mathematician should know
23
Pawn Promotion Endgame Problem-White to move and mate in 1
23
Why does Fritz prefer underpromotion in this position?
21
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?

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