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Learning is carried out using scientific methods, and one of the strategies used is a problem-based learning model that can help students become more proficient in critical thinking. The purpose of the study was to analyze the ability to think critically, the attitude of caring for the environment of students through a problem-based learning model assisted by a natural laboratory in science subjects. This study used a quasi-experimental research design with quantitative data analysis. The population in this study was grade VI students of public elementary schools in the Pangeran Diponegoro Cluster. Determination of research subjects by purposive sampling there are 4 students from 22 experimental class students consisting of one low student, two medium students, and one high student. The researcher as an instrument is equipped with observation sheets, test questions, interview guidelines, documentation. The results showed that learning using the Problem Based Learning model assisted by a natural laboratory can increase the improvement of critical thinking skills and environmental care attitudes in science learning for grade VI students at SDN 1 Nglandeyan and SDN 4 Ngraho. The data shows that the Sig. (2-tailed) 0.000 which is smaller than 0.05 then H0 is rejected and H1 is accepted, meaning that there is a difference in the average post-test scores of the Nglandeyan class and the Ngraho class where the average value of the Ngraho class is 84.14 greater than the Nglandeyan class which is 63.91. Based on the results of the above research, there is an increase in the implementation of the Problem Based Learning model in science learning on critical thinking skills and environmental care attitudes assisted by natural laboratories on Class VI Plant Breeding material, there is an influence on environmental care attitudes and critical thinking skills of students during the learning process, and there is an increase in learning designed on critical thinking skills, and the formation of environmental care attitudes. Keywords: Problem Based Learning, Nature Laboratory, Critical Thinking, Environmental Care Attitude.
Maharani et al. (Thu,) studied this question.