Three Balloons for Two Dollars: Developing Proportional Reasoning
Cynthia W. Langrall and Jane Swafford
December 2000, Volume 6, Issue 4, Page 254
Students develop proportional reasoning through problem solving. Different types of proportion problems elicit different solution strategies. Essential components of proportional reasoning are identified and recommendations made for instruction.
Problem Solving / Problem Posing
Ratios / Proportions