9-13 July 2012
Africa/Johannesburg timezone
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Investigation of the understanding of heat-time graphs by extended program students at the Mamelodi Campus of the University of Pretoria

Presented by Dr. CABLE MOJI on 11 Jul 2012 from 17:10 to 17:30
Type: Oral Presentation
Session: Education
Track: Track E - Physics Education

Abstract

Students have difficulties when they have to express some motions in terms of graphs. In a lesson studying cooling and warming up of liquid in containers insulated and uninsulated, students showed inadequate understanding of how to draw the warming up graphs even if cooling curves were intensively studied. About 40 % of the students were able to explain "correctly" how the warming up occurs, but not able to to indicate what they have correctly explained graphically. Identifying such difficulties equip lecturers with the expertise to successfully confront the problem of poor understanding.

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