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ERIC Number: EJ945960
Record Type: Journal
Publication Date: 2009
Pages: 8
Abstractor: As Provided
ISSN: ISSN-1557-5284
What Do Students Perceive during a Lesson on Center-of-Mass?
Liby, Bruce W.; Friedenberg, Jay; Yancopoulos, Sophia
Journal of STEM Education: Innovations and Research, v10 n1-2 p17-24 Jan-Jun 2009
This paper presents an assessment of how students perceive a typical classroom representation of center-of-mass. Participants were shown figures consisting of two filled black circles; they were told that these figures represented spheres or balls. They were then asked to indicate with a mark the point where the spheres would balance, i. e., they were asked to find the center-of-mass. There were two participant groups. The first group (labeled "Control") received only brief, written instructions on the exercise. The second group (labeled "COM") was shown a 15-minute video which discussed, qualitatively, the topic of center of mass and the same written instructions. They also received the same written instructions as the Control group. The results indicate how students perceive the problem. In all groups students do not estimate the center-of-mass as if they were considering spheres. We find that while the performance for both groups was poor, there is a difference between the two. This suggests some insight on teaching the topic. (Contains 3 figures.)
Institute for STEM Education and Research. P.O. Box 4001, Auburn, AL 36831. Tel: 334-844-3360; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A