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Connecting Research to Teaching
Connecting Research to Teaching: The When and Why of Using Proportions

Karen Heinz, Blair Sterba-Boatwright 

March 2008, Volume 101, Issue 7, Page 528

Abstract:
The "Connecting Research to Teaching" department consists of articles that bring research insights and findings to an audience of teachers and other mathematics educators. This month, the authors use a well-known problem to analyze student notions of proportion. Preservice elementary teachers were posed a problem that appears to have proportional elements. Most overlooked a difference relationship. The authors establish guidelines for teaching proportional reasoning. This department is edited by Libby Knott and Thomas A. Evitts.

Keywords:
Grade 7
Article
Algebraic Thinking / Pre-Algebra Concepts
Conceptual Development
Grades 9-12
Research
Teacher
Problem Solving / Problem Posing
Theory
Ratios / Proportions