Description

Overview:
Students represent and solve percent increase problems.Key ConceptsWhen there is a percent increase between a starting amount and a final amount, the relationship can be represented by an equation of the form y = kx where y is the final amount, x is the starting amount, and k is the constant of proportionality, which is equal to 1 plus the percent change, p, represented as a decimal: k = 1 + p, so y = (1 + p)x.The constant of proportionality k has the value it does—a number greater than 1—because of the way the distributive property can be used to simplify the expression for the starting amount increased by a percent of the starting amount: x + x(p) = x(1 + p).Goals and Learning ObjectivesDetermine the unknown amount—either the starting amount, the percent change, or the final amount—in a percent increase situation when given the other two amounts.Make a table to represent a percent increase problem.Write and solve an equation to represent a percent increase problem.
Subject:
Ratios and Proportions
Level:
Middle School
Grades:
Grade 7
Material Type:
Lesson Plan
Date Added:
09/21/2015
License:
Creative Commons Attribution-NonCommercial 4.0 Creative Commons Attribution-NonCommercial 4.0
Language:
English
Media Format:
Text/HTML

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