Investigation of Chemistry Laboratory Instructional Contents with Concept Analysis Methods--Recrystallization Skill

Author: Jhy-ming Horng

Abstract：

This research uses the concept analysis methods developed by Markle and Klausmeier for instructional design. By comparing several examples and nonexamples of a variable attributes of that concept. These attributes allow one to: (1) give better definitions, (2) arrange a logical sequence for experimental instruction, and (3) prepare a matched set of equivalent criterion-based test items.
With the aid of these powerful tools, chemistry experimental skills analysis sheets were constructed and systematic analysis of experimental materials in various textbooks were conducted. The weak points of each instructional material were identified.

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