The critical thinking skills require to be possessed by students to decide to gain new knowledge. The perception differences by each student influence students' thinking skills have, so to practice these skills is a needed learning approach to the student truly. One of them is problem-based learning. The purpose of this study is to train students' critical skills who have the cognitive method of Field Independent (FI) and Field Dependent (FD). This type of research is experimental research. The sampling technique in this study uses a cluster random sampling technique, which is taking random group samples. The results of this study are (1) the average Islamic Nurul Hadi Vocational School students belong to the dependent field cognitive style (FD); (2) the majority of students' critical thinking skills are in the high category, in 26 students consisting of 19 FI students and 7 FD students; (3) FI students are better at critical thinking compared to FD students. FD students need guidance in solving problems. PBL learning model is very appropriate to be used to train students' critical thinking skills with different cognitive styles.
Students must have communication skills to communicate their ideas and thoughts. The communication skill of students plays a role in physics learning because it can change the learning situation in a better direction. In addition to communication skills, collaboration skills must also be owned by the students in the learning of physics, one of which is used to conduct observations in groups. The purpose of this research is to know the relationship between communication skills and students’ collaboration skills, especially in physics. This research is experimental and the sample was taken by purposive sampling technique. In the results, there is a very high relationship between communication skills and students’ collaboration. The score students’ communication skills was 0.876, indicating that there was a direct relationship between students’ communication and collaboration skills, where students’ communication skills increase with the increasing of collaboration skill. Additionally, learning used of video tracker software created new knowledge and skills.
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