化學實驗技能概念學習之教材設計－蒸餾技能

作者:洪志明、王澄霞(國立臺灣師範大學化學系)

摘要：

本文研究設計大學階段的蒸餾實驗技能之概念學教材，發展出教材和教導策略，引導學生能發展出同時運用實驗技能、科學過程技能和學科知識，來解決其所新遇到的實驗問題，即達成蒸餾實驗技能的概念學習。蒸餾實技能概念學習的教材與評量工具是根據內容分析和教導／評量分析所得的教導與評量基準而設計的。本教材與教導／評量模式的有效性和評量工具的效度由下列成果看出：(1)超過82％的學生達到蒸餾技能概念學習的通過基準。(2)由前測至後測平均通過率增加，顯 示出學生學習的進步。(3)學生實驗操作成果與實驗技能、科學過程技能、學科知識間有很高正相關。

關鍵詞：化學實驗技能、概念學習、蒸餾、學習階層、基準參照評量

《詳全文》

A Design of Instructional Material for Conceptual Learning of Chemistry Experimental Technique-Distillation Technique

Author: Jhy-Ming Horng, Cheng-Hsia Wang(Department of Chemistry, National Taiwan Normal University)

Abstract：

his study designed a set of instructional materals for conceptual learn-ing of distillation technique at university level. Instructional materials and instruction strategies were developed and organized to guide students to-ward developing ability of simultaneously using the technique, intellectual inquiry skills, and subject matter knowledge to solve chemistry problems new to them, i.e., achieving conceptual learning. The instructional materials and assessment instrucments were developed on the basis of specific instruc-tional and assessment criteria that arose from content analysis and instruction/evaluation analysis. The efficiency of the Materials, instruction strate-gies and the validity of the assessment instrument were observed in (1) the facts that above 82% of the students passed at the criteria for conceptual learning of distillation; (2) progress of learning indicated by increments in the average passing rates from pre-test to post-test; and (3) strong positive correlations of the actual results of experimental technique performances with test results on (a) experimental skills, (b) the science-process skills, and (c) the subject-matter knowledge.

Keywords：chemistry experimental technique, conceptual learning, distil-lation, criterion-referenced measurement, CLD