Use of Activity-Based Method to Evaluate the Teaching and Learning of Redox Reactions among Senior High School Students

Table 1. FourOxidation-Reduction Models Model Reduction Oxidation

Models	Reduction		Oxidation
Oxygen model		loss of O		gain of O
Hydrogen model		gain of H		loss of H
Electron model		gain of electrons		loss of electrons
Oxidation number model		decrease in oxidation number		increase in oxidation number