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Understanding Students' Scientific Explanations in the Physics of Roller Coasters (Poster 45)

Sat, April 15, 8:00 to 9:30am CDT (8:00 to 9:30am CDT), Hyatt Regency Chicago, Floor: East Tower - Exhibit Level, Riverside West Exhibition Hall

Abstract

Scientific explanations are fundamental in helping students understand major scientific ideas and develop scientific thinking and reasoning. Writing an explanation is a challenging process. Students often fail to use evidence and draw connections between the scientific ideas they are explaining. In this study, we examined three aspects of scientific explanations (a) describing scientific concepts and principles, (b) explaining relations between concepts and principles, and (c) including evidence. We coded 108 middle school students’ writing in a roller coaster unit. We found that students were able to include concepts but had difficulty explaining the relationships between concepts. Students also did not include sufficient evidence. More support in helping students use evidence and explain relationships between concepts is needed.

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