以個別化電腦輔助教學探討學生對於氣體粒子概念之學習成效

Exploration of the Effects of Individualized Computer-Assisted Instruction of Students' Particulate Concept of Gas

邱上峰(ShangFeng Chiu)

指導教授 ： 黃寶鈿

國立臺灣師範大學/理學院/化學系/碩士(2001年)

摘要

本研究的主要目的為首先以兩段式診斷工具測量學生氣體粒子的錯誤概念，並以氣體粒子為中心主題，配合適當教學策略來設計電腦輔助教學之課程軟體，針對氣體粒子之分佈、運動、壓力及粒子性等概念來進行教學。最後則藉由兩段式之氣體粒子診斷工具探討其教學成效。研究對象為國小五年級到國中二年級學生，共296位學生。主要研究發現如下：
一、本研究採用氣體來作為教學的主題是因為氣體是確認真空概念和粒子運動的最好工具。從研究結果發現，學生對於氣體是『真實的東西』和氣體是一群在真空中不斷運動且看不見的粒子有理解上的困難，以致於學生在氣體的分佈運動概念上存在有許多錯誤概念，僅有三成多的學生具有成熟的分佈概念。
二、在氣體的運動概念上，學生也往往具備不成熟的運動概念。大部分學生普遍認為空氣的運動來自於外力的推動，例如風吹、搖動瓶子等外力的介入。另一個在氣體運動方 面常見的錯誤概念則是學生常常直覺地以擬人化的方式來想像空氣的運動模式，認為空氣會想要脫離密閉的空瓶而『往外跑』。真正具有成熟氣體運動概念的學生僅佔不到四成的比例。
三、在粒子概念部分研究發現，大部分學生仍然以連續概念的觀點來想像氣體，僅有一成多的學生具有成熟的粒子概念，另外有三成的學生則是具有不成熟的粒子概念。
四、由學生前後測的答對率比較可以發現，本電腦輔助教學的課程軟體設計對於學生在氣體粒子守恆概念及氣體相關概念如分佈、運動等，皆有明顯的進步。顯示搭配教學策略使用的電腦輔助教學能有效促進抽象概念的學習。

關鍵字

氣體粒子概念 ； 粒子運動 ； 電腦輔助教學 ； 兩段式測驗

並列摘要

The main purpose of this study is to diagnose students’ misconceptions of gas particles by two-tier diagnostic test measurement and to design a computer-assisted teaching software with a proper teaching strategy to instruct the conceptions about the distributions, the movements and the pressure of gas particles. And in the end of this study, the teaching effects would be evaluated by a two-tier diagnostic test measurement. The subjects were 296 students of G5 to G8.
The main findings of the study were:
(1) Gas was adopted as a topic because it is an appropriate tool to demonstrate the concept of vacuum and the movements of particles. The result shows that students have lots of difficulties in realizing gas is absolutely “existed” and “concrete”, and a group of particles moving restlessly in a vacuum. As a result, merely 30% students or so have complete concepts about the distributions of gas.
(2) Students usually have no thorough conceptions about the movements of gas. Most of them consider the movements of gas owing to external forces, such as blowing winds or shaking containers. Another usual misconception is to instinctively imagine the movements of gas by personifying the moving as “escaping from a closed space”. Less than 40% students understand the concepts of the movements of gas.
(3) In the aspect of the concept of particles, it is found that most students still do not think of gas as particulates. Only 10% students or so have thorough concepts, while 30% don’t.
(4) The difference between the rates of the correctness before and after our study implies that this computer-assisted teaching software obviously helps students understand the conservation concept and the relative concepts such as distributions, movements and so on.

並列關鍵字

partilce conception of gas ； particle movement ； computer-assisted instruction ； two-tier diagnostic test measurement

參考文獻

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