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Math Court: A Game of Proving Things
This site contains a game to help students better learn how to write proofs. The game has several different levels. The game can be played online or cards and board may be printed and used in the classroom.
Education Development Center
Making Mathematics: Proof Several Different Aspects
This site is a support teacher site with numerous proof topics linked to areas of the page. A few of the topics include: What is a proof?, When Should Students Prove?, How Do We Prove?, Writing Proofs, When is a Proof Finished?,...