PERBANDINGAN MODEL PEMBELAJARAN PROBLEM SOLVING DAN PROBLEM BASED LEARNING TERHADAP KEMAMPUAN BERPIKIR KRITIS SISWA KELAS XI MIA MAN 2 KOTA BENGKULU

Abstrak

The aim of this study to determine the comparison of Problem Solving (PS) and Problem Based Learning (PBL) models to critical thinking skills of student on buffer solution material. This type of research is quasi experimental research with posttest only control group design research design. The population of this study is all class XI IPA of MAN 2 Bengkulu City academic year 2018/2019 as many 133 students. The analysis of the data was used the normality test,  homogeneity test, and hypothesis test.  The research sample was taken by purposive sampling technique. Data on the results of students' critical thinking skills are obtained from the value of the posttest or final test. Posttest is done by using test instruments in the form of descriptive tests as many as 6 items, each of which has a different critical thinking indicator. Previous test instruments were tested and analyzed to see the level of validity, reliability, differentiation and the level of difficulty of the questions. The results of the study showed that the average value of students' critical thinking ability achievement in the experimental class 1 was higher than that of the experimental class 2 students which were 74.09 and 70.22. Based on these results, the experimental class 1 which applied the problem solving learning model was better at improving students' thinking skills than the experimental class 2 which applied a problem-based learning model. Hypothesis testing with the T-test at the 0.05 significance level yields a sig value. (2-tailed)> level of signicant which is 0.147> 0.05 so that Ho is accepted. Thus, it can be concluded that there is no significant difference between the critical thinking skills of the experimental class 1 students who apply PS models and experimental class 2 students who apply the PBL model.