Proportional Reasoning

In this resource, a special kind of functional relationship is explored: the proportional relationship. Teachers may find the resource useful for professional development, especially the videos. Students develop proportional reasoning skills by comparing quantities, looking at the relative ways numbers change, and thinking about proportional relationships in linear functions.
This resource has four objectives. Students learn to differentiate between relative and absolute meanings of "more" and determine which of these is a proportional relationship, compare ratios without using common denominator algorithms, differentiate between additive and multiplicative processes and their effects on scale and proportionality, and interpret graphs that represent proportional relationships or direct variation.
Resource ID#: 25140 Type: Unit/Lesson Sequence
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Direct Link: https://www.learner.org/series/learning-math-patterns-functions-and-algebra/proportional-reasoning/

General Information

Subject(s): Mathematics
Grade Level(s): 8
Intended Audience: Educators educators
Suggested Technology: Computer for Presenter, Computers for Students, Internet Connection, Adobe Flash Player
Instructional Time: 3 Hour(s)
Keywords: working with proportional relationship, compare ratios, direct variation, slope, interpret graph, mixture problem
Instructional Component Type(s): Unit/Lesson Sequence,  Problem-Solving Task,  Teaching Idea
Resource Collection: General Collection

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