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Tool: Changing Cost per Minute
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Go to: http://www.nctm.org/standards/content.aspx?id=25091 (opens a new window)
Description: Users learn how modifications in the rate affect the linear graph displaying accumulation (the total cost of calls).
Technology Type: Java Applet 
Author: NCTM
Language: English 
Cost: Does not require payment for use
Average Rating:  [3] Login to rate this resource
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Reviews: see the 3 reviews of this resource / add a review of this Tool 
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Tool: Constant Cost per Minute
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PreCalculus increasing, decreasing and constant rates of change
Financial Education Buying goods and services, Comparison shopping
Teacher Review (Not based on classroom experience)
Reviewer: ncmathbuff, Jul 31 2008 12:04:52:787PM
Appropriate for: introduction to a concept
Ability to meet my goals: Effective
Recommended for: Math 6: Algebra and expressions, Equations and functions, Ratio and proportion
Math 7: Algebra and expressions, Equations and functions, Linear relationships, Ratio and proportion
Teacher Review (Not based on classroom experience)
Reviewer: rebsterjane, Jun 9 2008 04:20:07:560PM
Appropriate for: applications of a concept or technique
Ability to meet my goals: Neutral
Recommended for: Algebra
Student Review (Not based on classroom experience)
Reviewer: jdf35, Oct 16 2006 12:35:43:567PM
Appropriate for: introduction to a concept, practice of skills and understandings, applications of a concept or technique
Ability to meet my goals: Effective
Recommended for: Math 7: Equations and functions, Ratio and proportion
Geometry: Points and lines
Algebra: Use of Variables, Linear Equations
Read the full length reviews for this resource