The Investigation of Junior High Students' Mental Models in Chemical Equilibrium with Different Teaching Strategies

• Main Authors: Cheng Wei-Tin, 鄭瑋婷
• Other Authors: Lin Huann-shyang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/08300479363159746204

碩士 === 國立高雄師範大學 === 化學系 === 95 === The purpose of the study is to examine the mental models and the mental model developmental features of the 8th graders in the two teaching styles of 5E learning cycle instruction method and didactic instruction method. In addition, the mental models of high-achiever’ students and low-achiever’ students were compared. The major findings of the study are as follows： 1. The quality of students’mental models with 5E learning cycle instruction method is better than those with didactic instruction method,especially for low-achiever’students. 2. Junior high students’mental models have many alternative conceptions in chemical equilibrium.The reasons consist of difficultly exchanging macrocosm for microcosm ,being influenced by the teaching process and the prior mental models,and the misunderstanding of scientific language. 3. The students’mental model development has the following features： （1） Prior mental models tend to build up new mental models, but those also limit new mental models development. （2） The overmuch association of the similar function could affect the mental model development. （3） When students encounter difficult problems, they tend to adopt simple and non-scientific solutions, even unwilling or unable to build up any model. （4） Insufficient learners’ prior knowledge is possibly impede new mental models development and refinement.