Abstract.Existing human resources must be prepared early. Indeed, national education aims to create intelligent and competitive generations. This research is oriented towards the influence of CAM, which is implemented in the learning process. This research method is quasi-experimental. The research design used a non-equivalent control group design. As a sample is XI grade in SMA Muhammadiyah 7 Surabaya. Data collection techniques through observation and tests, critical thinking skills test sheets and students' concept mastery tests. Descriptively, self-critical thinking skills are 100% completed classically. The results of the t-test have a significance value of ≤ 0.05, which is 0.000. Then for mastery of the concept from the results of the t-test, the significance value is ≤ 0.05, namely with a significance value of 0.000. From the results of this study, it can be concluded that there is an influence of CAM p on students' critical thinking skills and students' mastery of concepts.

This study aims to find out how students' problem-solving skills in the subject of animal body tissue and structure use the Jigsaw learning model. This type of research is quantitative research with a sample size of 70 students of the biology education study program. The research sample was taken from students who were normally distributed, had the same characteristics (homogeneous), and had the same average value. The data analysis technique uses simple linear regression. The results showed that there was a significant influence between the Jigsaw cooperative learning model in the animal tissue and body structure course on the problem-solving abilities of students in the biology education study program with a significance value of 0.000 <0.05, so that the jigsaw learning model can help students improve problem-solving skills

Oil sludge is a product of petroleum mining activities and causes environmental pollution. However, oil sludge, including hazardous and toxic waste materials (B3), has been less effective in reducing oil sludge pollution. Thus, the researcher solved the issue by using hydrocarbonoclastic. It is necessary to use hydrocarbonoclastic bacteria isolated directly from their habitat (indigenous bacteria) as hydrocarbon degrading agents. Therefore, this study aimed to isolate and identify indigenous thermophilic bacteria from East Kalimantan Oil sludge. This study is an observational study that is analyzed descriptively. Procedure for isolation and identification of thermophilic bacteria from oil sludge grow on Synthetic Mineral Water media (SMW) with and without an autoclave. The Microbact Identification System Kit GNB 24E was used to characterize colonies macroscopically, microscopically, Gram staining, physiological tests (catalase, coagulase, and motility tests), and biochemically. The bacteria that were successfully isolated were later identified with Microbact Software and Bergey's book Manual of Determinative Bacteriology Ninth Edition. The results of the isolation and identification of thermophilic Indigenous bacteria from Oil Sludge Kalimantan Timur found Pseudomonas aeruginosa species with a similarity accuracy of 98.33%. The identified bacterial isolates can later be used as bioremediation agents on soils polluted with oil sludge. Keywords : Indigenous bacteria, Oil Sludge, Pseudomonas aeruginosa.