THE EFFECT OF PROJECT BASED LEARNING AND COOPERATIVE LEARNING GROUP INVESTIGATION ON STUDENT’S CONCEPT MASTERY, SCIENTIFIC ATTITUDE AND CREATIVE THINKING SKILL IN RESPIRATORY SYSTEM AT SMA NEGERI 3 MEDAN

This study was aimed to find out the effect of Project-Based Learning and Group Investigation learning model toward student’s conceptual mastery, scientific attitude, and creative thinking skill. The design of the study was quasi-experimental with pre-test and post-test control group. The population of this research was students in grade XI Science of SMA Negeri 3 Medan Academic Year 2014/2015. The total number of population of this research was 108 students. It was selected using purposive sampling technique and divided into three classes: the experiment classes and the control class. On the experimental group, project-based learning and group investigation model were applied, whereas in the control group, a conventional learning model was applied. Multiple choices was used to measure student’s concept mastery.A questionnaire was administered for measuring student’s scientific attitude, and essay test was given to measure the student’s creative thinking. The statistical assumtion test revealed that the data were normally distributed and homogenous. The data were analyzed by using one way Analysis of Variances (ANOVA) One way and Analysis of Covarians (ANACOVA) at significance level of 0.05 followed by Tukey’s test assisted by SPSS 19.00. The results of the research are: (1) There were an effect of learning models to student’s concept mastery. Students who were taught by Project-based learning model had significantly different from those of Group Investigation (P= 0.000) and conventional learning model (P = 0.000). (2) There was an effect of learning models to student’s scientific attitude. Students scientific attitude who were taught by Project-based learning model, were significantly different from those of Group Investigation (P=0.000) and conventional learning model (P = 0.000) ; (3) There was an effect of learning models to student’s creative thinking skill. Students whoe were taught by Project-based learning model has significantly different from those of Group Investigation (P= 0.000) and conventional learning model (P = 0.000). The result shows that project based learning model was better than cooperative learning models and conventional learning. It proves that learning process with project based learning affects student’s concept mastery, scientific atitude, and creative thinking.