以兩段式紙筆測驗探討高一學生的原子與離子概念

Abstract

本研究主要目的在以兩段式紙筆測驗的方式診斷高一學生對於原子與離子之認知概念情況並利用比例推理測驗工具，測試學生之認知發展情形，以探討學生之推理能力與原子與離子概念的關係。正式施測之學生為來自北部一所高級中學之高一自然組及社會組學生共計七個班級共302人。在預測中由回答資料分析，可以診斷出學生對原子與離子概念之認知情況與錯誤概念類型。從學生的回答資料中，以探究此兩段式紙筆測驗是否可以了解學生經由國民中學理化教學兩年後，對於原子與離子之了解概況，並了解學生之認知發展能力與原子或離子概念之學習的關係。本研究之主要發現如下： 一、本研究中高一學生具有比例推理能力的比率佔85﹪。 二、本研究中高一學生對於原子與離子結構與性質的了解，以原子概念的答對率較高。 三、本研究中高一學生對於原子與離子概念的了解，與化學段考成績之表現的相關性達統計上的顯著水準。 四、本研究中高一學生對於原子與離子的認知理解，自然組的學生優於社會組的學生。 關鍵詞：粒子概念、兩段式診斷測驗、比例推理能力、原子與離子概念

The main purpose of this study was to diagnose the 10th grade students of senior high school about the concepts of atoms and ions in chemistry by a two –tier diagnostic test instrument. Also use the Proportional Reasoning test (PP1) to explore students’ cognitive development. The formal tested were from－the 10th grader major in science and in social science. Seven classes in a senior high school served as the subjects. There were 302 students who participated test. Analyzing the students， answer in a preliminary test, diagnose the cognition styles and misconceptions of the atoms and ions in chemistry. The subjects in the seven classes were divided into the group of science major students and the group of society major students by students，interest and their ability of math and science. From the response of students, we could investigate the students， recognition situation about the atoms and ions by their two years， science education in junior high school. And we also could compare the students， reasoning ability with their concepts in atoms and ions. The main findings of the study were：

1.There were 85﹪of 10 th grade students in senior high school possessed proportional reasoning ability.

2.The percentage of correct response about atoms was higher than the other concepts in ions for 10th students.

3.The correlation between students， scores in atoms/ions and section examination were statistically significant.

4.For 10th students, the science major were better than non－science major students in the conception of atoms/ions.

5.Keyword： particle concept, two –tier diagnostic test instrument, proportional reasoning ability., the concept of atoms and ions