2009 Volume 50 Issue 2 Pages 31-38
When junior high school students study the unit on "Force and Motion", an experiment in which an object slides down a slope is often used. This experiment is intended to help students understand that the motion of an object on a slope is a motion caused by constant force. Many students, however, do not understand this idea because they think that a larger force works on an object that moves faster. In this research, we adopted an experiment to pull a trolley by constant force as the verification experiment aiming to promote the students' understanding of the correct idea and evaluated the effect of the experiment. The result of the evaluation showed that this experiment was effective for those students who believed before the experiment that "a larger force works on an object that moves faster".
