This classroom action research was designed to improve the quality of teaching-learning process in chemistry at class 2 of SMUN 1 Mataram. Observation, evaluation, and analysis of teaching-learning process were conducted during the implementation of the planned experimentation in the classroom or laboratory. The results showed that the quality of teaching-learning process improved. The students' enjoyment in learning chemistry and their awareness of its importance in their daily life increased. Besides, both students' average scores and comprehension also increased.
                        
                        
                        
                        
                            
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