Improper Applications of Proportional Reasoning
Wim Van Dooren, Dirk De Bock, Lieven Verschaffel and Dirk Janssens
December 2003, Volume 9, Issue 4, Page 204
A description of the improper proportional reasoning displayed by many students aged 12–16 when solving problems about the area of enlarged geometric figures and how persistent they are in this behavior.
Geometry & Measurement
Professional Development / Teacher Education
Ratios / Proportions