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Overview:
Students are given a collection of statements that are incorrect. Their task is to construct arguments about why the statements are flawed and then correct the flawed statements.Key ConceptsPercent change is a rate of change of an original amount.In two situations with the same percent change but different original amounts, the percent amount will be different because the percent amount depends directly on the original amount. For example: 50% of 20 is 10. 50% of 10 is 5.Similarly, in two situations with the same amount of increase but different original amounts, the percent change of each amount is different. For example: Suppose two amounts increase by $5. If one original amount is $20, the increase is 25%. If the other original amount is $25, the increase is 20%.Goals and Learning ObjectivesIdentify errors in reasoning in percent situations.Use examples to explain why the reasoning is incorrect.
Subject:
Ratios and Proportions
Level:
Middle School
Grades:
Grade 7
Material Type:
Lesson Plan
Provider:
Pearson
Date Added:
09/21/2015
License:
Creative Commons Attribution Non-Commercial Creative Commons Attribution Non-Commercial
Language:
English
Media Format:
Text/HTML

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