%A Rosid, Muhamad %D 2019 %T ANALISIS KEMAMPUAN BERPIKIR KRITIS SISWA PADA PEMBELAJARAN KIMIA: Materi Reaksi Redoks dan Elektrokimia MENGGUNAKAN MODEL PROBLEM BASED LEARNING %K %X Abstract: This study aimed to analyze the learning activities of students in the chemistry learning process by using the problem base learning (PBL) learning model. This research was an experimental study using Control Group Design on 12th grade science students at High School Tegaldlimo Banyuwangi, East Java. As a control class was class 12 IPA-1 and as an experimental class was class 12 IPA-2. Learning chemistry of redox and electrochemical reaction materials in the experimental class used the problem base learning model, while learning in the control class did not use the problem base learning model. Aspects of critical thinking skills reviewed include 3 aspects: (1) Elementary clarification (giving basic explanations), which was about what known and what the core problem; (2) The basis for the decision (determining the basis for decision making), namely the right reasons as the basis before a step was taken; (3) Inference (drawing conclusions), namely drawing correct conclusions must be based on reasons that are reasonable or logical. Student learning activities during the study were also observed to include: 1) involvement in discussion, 2) involvement in carrying out practicum, 3) discipline in learning, 4) responsibility. The results of the analysis using the t-Test statistical analysis with a 95% confidence level proved that the students' ability to provide explanations, decision making, and the ability to draw conclusions in the experimental class students were significantly higher than those in the control class. Keywords: Problem Based Learning Model, Critical Thinking Ability %U https://jurnal.unej.ac.id/index.php/JPF/article/view/16831 %J JURNAL PEMBELAJARAN FISIKA %0 Journal Article %R 10.19184/jpf.v8i4.16831 %P 303-308%V 8 %N 4 %@ 2721-1959 %8 2019-12-01