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Algebraic Statement Sometimes,...

Proofs (Discrete Math) 
Flash 
Support Material 

[0]

This minilesson explains concepts related to the logical arguments and making conclusions using the "principle of contradiction" and the "principle of identity".
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DC Proof: An Aid to Teach the ...

Proofs (Discrete Math) 
Computer 
Tool 

[0]

DC Proof is a PCbased educational software package. It is designed to facilitate students' transition to proofbased mathematics at the undergraduate or advanced high school levels. An interactive tu...
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Find a CounterExample or Othe...

Disproof by countereg. (Discrete Math) 
Flash 
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[0]

This lesson explains how to use the counter example to disprove a conjecture.
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Pythagorean Theorem

Proofs (Discrete Math) 
Java Applet 
Support Material 

[1]

Read explanations of fortythree proofs of the Pythagorean theorem. Some of the proofs have additional pages with applets to explore.
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Pythagorean Theorem

Proofs (Discrete Math) 
Java Applet 
Tool 

[3]

This virtual manipulative allows you to walk through a visual proof of the Pythagorean theorem. Before beginning the proof, recall that the pythagorean theorem is: c^2 = a^2 + b^2
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