Smoking behavior and learning outcomes in student of senior high school on respiratory system with PjBL

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The Goals of this research is to analyze smoking behavior and learning outcomes in students of senior High school after receiving learning system of respiration with PjBL. The kind of research is Quasi Experiment with Non Equivalent Control Group design. Two classes as samples taken with purposive sampling. First class with PjBL and second class without PjBL. The methods of it taken data by observation, documentation, tests, questionnaires, and interviews. T-test analysis on smoking behavior and learning outcomes show that the two classes are significantly different. The average of N-gain class PjBL is 0.73 high category and non PjBL class is 0.57 medium category. The result of Product Moment analysis on class PjBL shows that r = 0.580 indicates there is positive correlation of medium category, on non PjBL there is nothing relationship. Based on the results of the study concluded that PjBL on learning respiratory system significantly influence for smoking behavior and learning outcomes in student of senior high school and there is also a positive correlation with moderate category between learning outcomes and smoking behavior in the PjBL class and nothing relationship between learning outcomes and smoking behavior in non-PJBL classes.