Investigating Mathematical Thinking and Discourse with Ratio Triplets
an Canada, Mike Gilbert, Keith Adolphson
August 2008, Volume 14, Issue 1, Page 12
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.
Math Coordinator / Coach
Problem Solving / Problem Posing
Ratios / Proportions