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Investigating Mathematical Thinking and Discourse with Ratio Triplets

an Canada, Mike Gilbert, Keith Adolphson 

August 2008, Volume 14, Issue 1, Page 12

Abstract:
Describes a unique task structure that helps foster classroom discourse and reveals students' mathematical conceptions. The example involves a proportional reasoning task set within a best-buy context. Three versions of the task are provided which encourage students to consider the meaning of ratios in multiple ways. Several student responses are provided and analyzed.

Keywords:
Article
Conceptual Development
Grades 6-8
Communication
Math Coordinator / Coach
Research
Teacher
Lesson Plans
Problem Solving / Problem Posing
Student Work
Ratios / Proportions