• 作者： 邱美玲; 邱美虹; 何佳燕
• 作者服務機構： 國立臺灣師範大學附屬高級中學; 國立臺灣師範大學科學教育研究所
• 中文摘要： Numerous studies have shown that learners at different levels and ages have difficulties understanding science concepts. Such difficulties are revealed by students’ alternative conceptions generated during instruction. The reasons for these difficulties have some common features, such as students’ complex, abstract, and inconsistent intuition about those science concepts. In chemistry, this also holds true for many fundamental concepts (e.g., the structure and motion of atoms and molecules; the behaviors of particles in gas, liquid, and solid states). To understand the knowledge structure held by the tenth graders involved in this study, we first conducted openended and semi-structured interviews, followed by a paper-and-pencil test covering the arrangements and behaviors of particles in three states (solid, liquid, and gas). We followed this with more interviews to hear their explanations for each answer for the sake of developing multiple-choice test items based on the learners’ understanding of chemistry. Using the results from the first stage, we designed a software program with dynamic representations to help us investigate what representative knowledge the learners had of chemistry concepts and how they explained the concepts. The students were tested individually in a computer lab. Each student worked at his or her own computer and answered the questions so as to best reflect his or her understanding. The findings revealed that the students were able to identify the static structures of particles in three states. They were also able to distinguish the differences in particles’ motion between the solid and gas states. However, about 15 percent of the students believed that particles in a solid are static. In addition, more than half of the students believed that the motion of particles in a liquid was the same as that in a solid. Reasons for their choices were also examined. Implications for learning and instruction are discussed.
• 英文摘要： --
• 中文關鍵字： dynamic representation, matter, conception
• 英文關鍵字： --