Tuesday, April 16, 2013: 10:30 AM-12:00 PM
Rooms 205/207 (Colorado Convention Center)
Lead Speaker:
Andrew Izsak
Co-speakers:
Sybilla Beckmann
,
Erik Jacobson
,
Chandra Orrill
and
James Burke
Discussant:
Patrick Thompson
Description of Presentation:
We bring together a new mathematical analysis of proportional relationships and three empirical studies. The analysis highlights two definitions of ratio. The empirical studies, each from a different project, examine when middle-grades teachers are more and less successful in making appropriate determinations about proportionality.
Session Type: Research Symposium