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Dan Christensen

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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  • Canada
  • dcproof.com
  • Member for 3 years, 11 months
  • 44 profile views
  • Last seen Nov 29 at 2:46

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Top posts (24) All Questions Answers | Votes Newest

7 Exponents with Negative Base; with or without Parentheses Feb 16 '18
6 Why are induction proofs so challenging for students? Jul 13 '17
6 Should my 8th graders see a proof of the Pythagorean Theorem? Mar 16 '16
4 Inability to work with an arbitrary mathematical object Feb 14 '18
4 Are students being adversely affected by cranks or trolls in online math forums? Dec 4 '17
3 What are the best places online where math educators can discuss their experience? Mar 16 '18
3 What is a variable? Mar 6 '16
2 Real-life exceptions to PEMDAS? May 23
2 Teaching congruent triangles non-rigorously Apr 20 '18
2 Why do no students know to change the limits of integration when doing substitutions? Feb 9 '18
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