Mathematics Educators
Dan Christensen's user avatar
Dan Christensen's user avatar
Dan Christensen's user avatar
Dan Christensen
  • Member for 7 years, 1 month
  • 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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20
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34
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5
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Top posts
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All Questions Answers
Score Newest
answer
9
Why are induction proofs so challenging for students?
Jul 13, 2017
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
question
4
Are students being adversely affected by cranks or trolls in online math forums?
Dec 4, 2017
answer
4
Real-life exceptions to PEMDAS?
May 23, 2019
answer
3
What is a variable?
Mar 6, 2016
answer
3
What are the best places online where math educators can discuss their experience?
Mar 16, 2018
answer
3
Inability to work with an arbitrary mathematical object
Feb 14, 2018
answer
2
Why do no students know to change the limits of integration when doing substitutions?
Feb 9, 2018
answer
2
Why do students have problems with showing that something is well-defined? How can this be improved?
Dec 18, 2016
Top network posts
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103
Why is negative times negative = positive?
88
The staircase paradox, or why $\pi\ne4$
42
How big is infinity?
17
How to apply the recursion theorem in practice?
16
Is Pigeonhole Principle the negation of Dedekind-infinite?

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