使用新系統基模改進舊系統基模在分析系統受力作用缺點之探討

Discussion on Using the New System Schema to Improve the Shortcomings of the Old System Schema in Analyzing the Forces Acting on a System

高中學生學習力學單元時，能否畫出正確力圖最為關鍵。但學生因存有許多力的迷思概念，而不能畫出正確的力圖。而學生描繪力圖前，若先描繪系統基模，將有助於學生畫出正確力圖。本研究旨在探討舊的系統基模的缺點及其發生的可能原因；此外，根據舊系統基模的缺點，發展新的系統基模表徵，並介紹新系統基模表徵的描繪方法，及論述新系統基模為何能改進舊系統基模的缺點。

When senior high school students learn the mechanics unit, whether they can draw the correct force diagram is the most important thing. However, students cannot draw the correct force diagram because they have many misconceptions about force. If students first draw the system schema before they draw the force diagram, it will help the students to draw the correct force diagram. The purpose of this study was to explore the shortcomings of the old system schema and the possible reasons why they happened. In addition, we developed a new system schema representation according to the shortcomings of the old system schema. We also introduce the description method of the new system schema representation, and discuss why the new system schema can improve the shortcomings of the old system schema.