Pengaruh Model Pembelajaran Inkuiri Terbimbing terhadap Kemampuan Berpikir Kritis Siswa Kelas X MIA pada Materi Pencemaran Lingkungan di Surakarta

Abstract

- The objective of this research was to find out the influence of guided inquiry learning toward the critical thinking skills of X MIA students on environmental pollution material in SMA A Surakarta. This research was a quasi experimental research with posttest only nonequivalent control group design. The population of the research is all of the X MIA students of SMA A Surakarta in the academic year of 2013/2014. The sample was selected through cluster sampling. The data were collected using test and non-test method. The test applied test method is critical thinking essay, while the applied non-test method is observation and documentation. The hypothesis testing is done by applying t-test with SPSS version 16. From the hypothesis result of the influence of guided inquiry learning toward critical thinking skill, the obtained result of the significance value is 0.013 (a< 0.05) and t = 2.563 > ttable(a,df) = 1.670. There is a significant difference in the mean score of critical thinking skill between experimental group and control group. The mean score of experimental group (81.44) is higher than control group (75.97). The achievement of each critical thinking skills aspects of experimental group on interpretation is 90 %, analysis is 53 %, inference is 76 %, explanation is 95 %, evaluation is 82% dan self-regulation is 93 %, while the achievement of each critical thinking skills aspects of control group on interpretation is 84 %, analysis is 45 %, inference is 84 %, explanation is 91 %, evaluation is 61 % dan self-regulation is 91 %. The achievement of each critical thinking skills aspects of experimental group is higher than control group in all of critical thinking skills aspects except inference. Based on hypothesis testing and data analysis it can be concluded that guided inquiry learning gives significant effect toward the critical thinking skill in biology learning on interpretation, analysis, explanation, evaluation, and self-regulation aspect but not significant on inference aspect