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Technology PoW: TI-PoW: A Phone-y Deal?
Go to: http://mathforum.org/pows/submission-flow.do?publicationId=3766 (opens a new window)
Description: Use your TI-Nspire to compare two cell phone pricing plans and determine which one is the better deal based on call minutes per month.

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Technology Type: TI-Nspire 
Author: Steve Risberg and Max Ray
Language: English 
Cost: Does not require payment for use

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Lesson Plan: Math Forum Teacher Packet: TI-PoW: A Phone-y Deal
Tools: TI-Nspire
A Phone-y Deal: Make a Mathematical Model
Courses: Algebra Linear Systems
Algebra II Solving systems of equations

Teacher Review (Based on classroom experience)
Reviewer: OklaMathman, Nov 19 2008 04:26:36:543PM
What did students learn? How to come up with a linear equation and compare graphs.
Recommended for: Algebra: Linear Equations, Linear Systems; Algebra II: Solving systems of equations
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