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Visit this site: http://www.cut-the-knot.org/exchange/
Author:Interactive Math Miscellany and Puzzles, Alexander Bogomolny
Description: A page devoted to questions and answers concerning Bogomolny's pages and math in general. Postings are approved by Bogomolny, and usually answered by him, although they may be answered by the general public as well. Posting topics vary all the way from "Is a square a rectangle?" and the four 4's problem to linear programming and partition of point sets.
Levels: Elementary, Middle School (6-8), High School (9-12), College
Languages: English
Resource Types: Problems/Puzzles, Web-Based Discussions

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