Investigating into Improvement of Chemistry Experiments in Relation to Its Depth for the Acid-base Concept Author: Yong-Hwa Yang

Abstract：

This is a research project which investigates into the improvement of experi-mental activities in the field of chemistry from primary school through senior high school. The correlation and suitability of each experiment was evaluated with the following points as basis: (a) Relevance of data produced to the concept for the particular learning level, (b) Correlation of experiments for the same concept at different learning level. (c) The level of cognitive development of the students. (d) Previously acquired learning of the students. (e) Safety, simplicity, economy (both of money and of class time).
The key experimental activities of the acid-base concept were reviewed on major curricula (R.O.C., Japan, U.S.A., England).

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