Utilization of problem based learning models assisted by learning media to improve critical thinking skills and cognitive learning outcomes of students have not run optimally. This study aims to determine the differences in critical thinking skills and cognitive learning outcomes of students with problem based learning (pbl) learning models assisted by audio-visual media in SMA Negeri 06 Bengkulu City. The research method used was quasi-experimental with a randomized pretest-posttest control group design. The study population was a class XI student of SMAN 06 Bengkulu City with two groups namely experimental and control samples with each 36 people. The instrument used, namely essay question test totaling 5 questions that measure critical thinking and multiple-choice questions totaling 10 questions to measure cognitive learning outcomes. The research data analysis technique used a t-test. The results showed that there were differences in critical thinking skills and student cognitive learning outcomes. This is evident from the t-count value of critical thinking skills of 6.414 (> t-table) and cognitive learning outcomes of 5.826 (> t-table). This research concludes that there are differences in critical thinking skills and cognitive learning outcomes of students with PBL models assisted by audio-visual media.
Critical thinking disposition is an important part of someone's critical thinking. This study aims to determine the differences in critical thinking dispositions of students in biology education based on gender. This research was conducted at Muhammadiyah of Bengkulu University involving 73 biology students as respondents, which is consisting of 19 male and 54 female. This research is a quasi-experimental type with one group. The instrument used in this study was the Critical Thinking Disposition in Biology Test (CTDBT), which is the first test instrument developed to see the critical thinking disposition in biology. The data obtained were analyzed through non-parametric statistics, namely the Mann-Withney test with the help of the SPSS version 20 application. The results showed that in general there was no significant difference in the disposition of biological critical thinking among male and female male and female students, except for the analyticity indicator. The results of this study can contribute to lecturers and stakeholders in making decisions to improve the quality of graduates at the University
The effectiveness of learning is said to be successful if all learning can be fulfilled. One of them is learning motivation. Learning that can increase the effectiveness of learning and student motivation towards critical thinking skills is electronic learning with the google classroom application. E-learning can measure students' motivation to learn and their critical thinking skills. Students are considered successful when they achieve their learning goals. But in reality, students have not shown motivation and critical thinking skills. This is what makes learning activities less effective and efficient. Students tend to be lazy to think and express their opinions. During the learning process, students need to be motivated to be interested in learning, thinking and understanding the material. It is the responsibility of the lecturer to always innovate in the learning process in order to stimulate motivation and critical thinking skills. The purpose of this study was to determine whether there was an effect of learning effectiveness and motivation using google classroom on critical thinking skills in educational research methods courses. This type of research is a quasi-experimental research (quasi-experimental). The design used is the non-equivalent group design. The research population was all students of the fifth semester of Biology Education, which amounted to 65 students which were divided into 2 classes, while the sample was class A, which amounted to 35 people. The method of collecting data on the effectiveness of learning and motivation uses a questionnaire while the ability to think critically uses a test. Then the data were analyzed using the anacova test. Based on the results of the research through the anacova test, it can be concluded that the effectiveness of learning and motivation using google classroom has an influence on the critical thinking skills of the fifth semester students of FKIP UMB for the 2020/2021 academic year.
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