浮力に関する誤概念研究 ： 形状に着目して

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  • An Analysis of the Misconceptions about Shape Dependence of Buoyancy

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In this study, misconceptions about shape dependence of buoyancy were revealed though the use\nof a questionnaire for the participants of two science classes (children N=45, adults N=49) and for\ncollege students enrolled in the Science Methods class (N=72). The results indicate that only 16% of\nthe participants understand that buoyancy depends not on the shape but on the volume of the object.\nAlso, 40% of the participants think that broad objects have more buoyancy because of the large bottom\narea. A lesson was developed and implemented for the participants to change their misconceptions.\nThe percentage of the participants who hold the correct understanding about the shape dependence\nof buoyancy increased. However, the percentage stays only at the 50% level for children. Need for\ndeveloping more effective instructional strategies, including connections to real-world experiences such\nas swimming, is discussed and advocated.

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