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Technology PoW: Counterfeit Coins
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Description: Find the fewest number of weighings that will identify which of the nine coins is counterfeit. A link to a Java applet from The National Library of Virtual Manipulatives (NLVM) is provided to help students think about the problem.

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Technology Type: Java Applet 
Author: Claire Mead
Language: English 
Cost: Does not require payment for use

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