Mathematics Educators Beta
Dag Oskar Madsen
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PhD in Mathematics (NTNU, Trondheim, Norway 2002)

FIDE Master in Chess

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57
Unique candidate that fails
Sep 21 '14
22
How do you explain why perpendicular lines have negative reciprocated slopes?
Sep 30 '15
18
Where does the word "roots" come from when talking about zeros
Sep 30 '14
13
How to think mathematically?
Oct 6 '15
12
Is there a literature database like MathSciNet for Mathematics Education?
Apr 16 '16
10
Greatest common divisor applications
Mar 12 '17
10
What is a good prototypical example of a construction that is not well-defined?
Aug 22 '14
10
What is the difference between "numeracy" and "number sense"?
May 27 '17
9
Real-world examples of more "obscure" geometric figures
Apr 1 '15
7
The definition of natural log and e
Jul 1 '14
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28
Is there any position where not promoting(illegally) would be the best move?
27
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?
20
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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