No abstract

One of Freshwater Biology course problems is that the students were unable to understand the environmental phenomena around them. The aim of this study was to develop issue-based teaching materials in Freshwater Biology course to improve the students’ understanding about the environmental phenomena through their learning outcomes. This research and development used three phases of the 4D model developed by Thiagarajan, namely define, design, and development. The development results were validated by content and media experts. The design used for pilot test, which was conducted among 20 students, was one group pretest-posttest design; meanwhile the data analysis technique used was independent t-test. It can be concluded that the teaching materials developed was valid with the average validation score as high as 79.83%. In addition, there was significant improvement (sig. 0.000) of student learning outcomes after attending the course which implementing the issue-based teaching materials developed. Thus, the implementation of issue-based teaching materials is recommended in Freshwater Biology course due to its potential in improving students’ learning outcomes.

No abstract

No abstract

AbstrakPenelitian ini bertujuan untuk mengetahui peningkatan kemampuan berpikir kritis siswa pada konsep pencemaran lingkungan. Metode yang digunakan yaitu kuasi eksperimen dengan "the matching only pretest posttest control group design" yang dilaksanakan pada siswa kelas VII di salah satu SMP Negeri di Kota Bandung. Data kemampuan berpikir kritis dijaring melalui tes pilihan ganda beralasan. Kesimpulan penelitian ditarik berdasarkan hasil analisis pengolahan data menggunakan Uji Mann-Whitney U. Berdasarkan perhitungan N-gain menunjukkan terdapat peningkatan kemampuan berpikir kritis yaitu pada kelas kontrol adalah 0,17 dan kelas eksperimen adalah 0,37. Berdasarkan hasil analisis statistik menunjukkan bahwa penerapan Problem Based Learning berbantuan Teknologi Informasi dan Komunikasi (TIK) dapat meningkatkan kemampuan berpikir kritis. AbstractThis research aimed to determine the increasing of student critical thinking skills on the concept of environent pollution. The research method was quasi-experiment with the matching only pretest-posttest control group design were implemented at class VII in one of the junior high school in Bandung. The results were gathered by the multiple-choice test for critical thinking skills. Conclusions are drawn based on the result of the processing and data analysis using statistical nonparametric with Mann-Whitney U test. The gain-normalized results revealed that there was increasing of critical thinking skills. The increasing of critical thinking skills were 0.17 for the control class and 0.37 for the experiments class. Based on the result of the statistical analysis showed that the implementation Problem Based Learning with an Information Technology and Communication (ICT) assisted can increase of students critical thinking skills.