The Proposal of the Order of Class and Method of Teaching through the Students' Comprehension of Chemical Resolutions and Combinations

Abstract

The study was to demonstrate the efficacy of class to determine whether or not teaching combination after resolution in chemical changes. The results of this investigation revealed the following points. 1) From questionnaire in chemical changes, there were a lot of students who understood the combinations more easily than the resolution 2) 65% or more of the study body answered that they had studied the resolution prior to studying the combination, which made it easier for them to understand the process as a whole. This point was more prominent when it comes to the students with low science scores performed. 3) 60% or more of the students who had learned the combination process before resolution process recall that they had learned them in reverse order. The reason is as follows. One reason is that the students gained a very valuable learning experience which gave them a long lasting deep impression. The other reason is that it is an easier concept to understand that combing two different elements produces a new molecule. In order to maintain the students' willingness and motivation to learn, the teacher should assemble the class based on the results of the survey.