Mathematics Educators
Dan Christensen's user avatar
Dan Christensen's user avatar
Dan Christensen's user avatar
Dan Christensen
  • Member for 7 years, 11 months
  • Last seen this week
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About

A math enthusiast and creator of DC Proof, an educational freeware program to introduce students to the basic methods of proof. Visit my math blog.

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Top posts
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All Questions Answers
Score Newest
answer
10
Why are induction proofs so challenging for students?
Jul 13, 2017
answer
10
How can I teach intuition why ‘If P then Q’ and ‘P only if Q’ mean the same, to first year undergraduates?
Nov 6
answer
7
Should my 8th graders see a proof of the Pythagorean Theorem?
Mar 16, 2016
answer
6
Exponents with Negative Base; with or without Parentheses
Feb 16, 2018
answer
5
Real-life exceptions to PEMDAS?
May 23, 2019
question
4
Are students being adversely affected by cranks or trolls in online math forums?
Dec 4, 2017
answer
3
What is a variable?
Mar 6, 2016
answer
3
Inability to work with an arbitrary mathematical object
Feb 14, 2018
answer
3
What are the best places online where math educators can discuss their experience?
Mar 16, 2018
answer
3
f(x+h) in the difference quotient
Feb 26
Top network posts
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109
Why is negative times negative = positive?
90
The staircase paradox, or why $\pi\ne4$
42
How big is infinity?
18
How to apply the recursion theorem in practice?
16
Is Pigeonhole Principle the negation of Dedekind-infinite?

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