PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING (PBL) TERHADAP KEMAMPUAN BERPIKIR KRITIS PESERTA DIDIK PADA MATERI GELOMBANG BUNYI DI SMAN 2 JOMBANG

THE EFFECT OF PROBLEM-BASED LEARNING (PBL) LEARNING MODEL ON STUDENTS' CRITICAL THINKING ABILITY IN SOUND WAVE MATERIAL AT SMAN 2 JOMBANG

Penelitian ini bertujuan untuk mendeskripsikan kemampuan berpikir kritis peserta didik kelas XI SMA dengan penerapan model pembelajaran fisika problem based learning (PBL). Hasil penelitian berupa keterlaksanaan pembelajaran, kemampuan berpikir kritis, dan respon peserta didik. Jenis penelitian yang digunakan adalah Quasi exsperimental design dengan desain Non-equivalent control group design. Subjek penelitian ini adalah peserta didik SMAN 2 Jombang yang menggunakan dua kelas yaitu satu kelas eksperimen dan satu kelas kontrol. Instrumen penelitian terdiri dari lembar observasi tes, lembar tes kemampuan berpikir kritis, dan lembar instrumen angket respon. Hasil penelitian menunjukkan hasil keterlaksanaan pembelajaran fisika dengan model pembelajaran problem based learning (PBL) terhadap kemampuan berpikir kritis SMA Negeri 2 Jombang yaitu terlaksana dengan skor nilai pada pertemuan pertama dan pertemuan kedua berturut-turut sebesar 91,11% dan 92,85% dengan kategori sangat baik. Model pembelajaran problem based learning (PBL) berpengaruh secara signifikan terhadap kemampuan berpikir kritis peserta didik pada materi gelombang bunyi di SMAN 2 Jombang sebesar 81,27%. Peningkatan kemampuan berpikir kritis peserta didik pada kelas eksperimen lebih tinggi dibandingkan kelas kontrol. Hal ini dapat dilihat dari rata-rata N-gain kedua kelas. Kelas eksperimen memperoleh rata-rata N-gain sebesar 0,75 (kategori tinggi) sementara kelas kontrol memperoleh rata-rata N-gain sebesar 0,69 (kategori sedang). Respon peserta didik setelah diterapkan model pembelajaran fisika model  Problem Based Learning (PBL) terhadap kemampuan berpikir kritis mendapatkan rata-rata persentase sebesar 85,90% dengan kategori sangat baik.

This study aims to describe the critical thinking ability of class XI high school students by applying the problem based learning (PBL) physics learning model. The results of the research are the implementation of learning, critical thinking ability, and student responses. The type of research used is a Quasi experimental design with a Non-equivalent control group design. The subjects of this study were students of SMAN 2 Jombang who used two classes, namely one experimental class and one control class. The research instrument consisted of test observation sheets, critical thinking ability test sheets, and response questionnaire instrument sheets. The results of the research show that the results of the implementation of physics learning using the problem based learning (PBL) learning model on the critical thinking ability of SMA Negeri 2 Jombang are carried out with a score of 91.11% and 92.85% at the first meeting and the second meeting respectively with the category Very good. The problem based learning (PBL) learning model has a significant effect on students' critical thinking ability in sound wave material at SMAN 2 Jombang by 81.27%. The increase in students' critical thinking ability in the experimental class was higher than the control class. This can be seen from the average N-gain of the two classes. The experimental class obtained an average N-gain of 0.75 (high category) while the control class obtained an average N-gain of 0.69 (medium category). Student responses after applying the Problem Based Learning (PBL) physics learning model to critical thinking ability obtained an average percentage of 85.90% in the very good category.