Abstract
Many topics within the middle school mathematics curriculum connect to the concept of
proportion. Interpretation of proportion situations and understanding of methods for solving
proportion problems provides a structure than can be applied to other related topics. As a
major resource for secondary mathematics, the extent to which popular textbooks link
proportion-related topics was the focus of this study. Our analysis revealed little
connectivity of ideas, confusing definitions and frequently illogical calculations. Questions
are raised as to the messages texts send to students.
Mal Shield & Shelley Dole
Investigating Textbook Presentations Of Ratio And Proportion