Abstract
The present study identified misconceptions concerning the effect of gravity on planetary motion and attempted to foster conceptual change through the hands-on, informal environment of a science museum. Participants were given pre- and posttests to illuminate possible misconceptions and to assess the effectiveness of the informal curriculum. Results indicated that inaccurate conceptions concerning the relationship between mass, gravity, and planetary motion are plentiful. Although some misconceptions remained intact after instruction, most were replaced with more scientifically accurate notions. Mean test scores significantly increased after instruction (p<0.05), and a follow-up survey demonstrated that the conceptual change was stable
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