Here are some of the internal Wikipedia references that are useful:
Wikipedia policy/General discussion
Pages I've done something to: (This is for my own reference, so I can keep up with any followups. It's not intended as a display :)
Lebesgue measure, talk:Lebesgue measure
Quantum gravity
Nondeterministic Turing machine
talk:Mathematics  asking about a page for arithmetic
talk:Golden mean  why do humans find the golden rectangle beautiful?
talk:Hausdorff space  What is Hausdorff, and why is it important?
talk:Evolution  Should material be redistributed?
talk:Koan  Examples?
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