- 期刊
高中生電路學概念理解的探討
Exploration of High School Students' Understanding of Circuit Theory Concepts
摘要
本研究目的在於將Engelhardt與Beichner（1997）所開發的「判斷及解釋電阻電路概念測驗（簡稱DIRECT）」引進，以提供電路學直流電阻電路分析之概念評量測驗工具，適合高三選修物理電路學單元教材學習後之概念評量，藉此探討高中生對直流電阻電路概念的理解。DIRECT概念評量測驗共有29題單選題，已徵求原作者同意授權翻譯為中文版，本試題翻譯後經學者專家審查，再依學生預試作答修訂定稿後，正式題本對161位同學進行施測，將答題數據資料進行統計分析，以學生在各試題對應的概念目標之答對情形為主。本測驗之試題分析結果顯示，試題之信度（內部一致性係數）KR20值為.748、整體答對率平均為37.0%、鑑別度平均為40.1%、難度平均為38.9%，與國外統計資料比較顯示，此份試題具有良好的信度、鑑別度及難度，概念目標達成率與國外平均接近；試題答對率較低之概念目標，主要為微觀抽象的電流概念及計算電功率及電位差概念之定量分析試題。DIRECT概念評量其內容符合高中選修物理課程單元，可提供國內教學及研究推廣，作為電路學概念理解之評量的工具。
並列摘要
The purpose of this study is to introduce the "Determining and Interpreting Resistive Electric Circuit Concepts Test (DIRECT)," developed by Engelhardt & Beichner (1997), into a Chinese version. This provides a concept inventory tool for teaching the unit of circuit analysis in direct current electric circuits. It is suitable for assessing the understanding of high school students in this subject, specifically those who have completed the elective physics course for Grade 12. Through this, we investigate the understanding of high school students regarding concepts related to direct current resistive electric circuits. The DIRECT concept inventory test consists of 29 multiple-choice questions. Permission was obtained from the original authors to translate it into Chinese. After expert review and revision based on preliminary student responses to the translated questions, the final version was administered to 161 students. The data from their responses were statistically analyzed, and the performance of students in each question and the corresponding conceptual objectives were investigated. The results of the analysis of the Chinese version of the test indicate that the reliability of the test items (internal consistency coefficient, KR20 value) is 0.748. The overall average correct response rate is 37.0%, with an average discrimination rate of 40.1% and an average difficulty level of 38.9%. When compared to international statistical data, the Chinese version of the test exhibits good reliability, discrimination, and difficulty. Using the DIRECT test to assess Taiwanese high school students, we found that their achievement of conceptual objectives is comparable to international averages. Concepts with lower correct answer rates primarily include micro-level abstract concepts related to electric current and quantitative analysis questions involving electrical power and voltage differences. The content of the DIRECT concept inventory aligns with the curriculum of the high school physics elective unit, making it a valuable tool for assessing students' conceptual understanding of electrical circuit in Taiwan.