This study aims to analyze the differences in the effectiveness of the Jigsaw cooperative learning model and the direct learning model of student learning outcomes in DKB subjects in class X DPIB of Vocational High School 2 Surakarta; to analyze the differences in learning outcomes between students who have high critical thinking skills and students who have low critical thinking skills in DKB subjects in class X DPIB Vocational High School 2 Surakarta; and to analyze whether there is an interaction between the learning model and students' critical thinking skills towards student learning outcomes in the class X DKB DPIB Vocational High School 2 Surakarta. This study is a quantitative experimental study with a 2x2 factorial design. The sample of this study was the tenth grade students of DPIB Vocational High School 2 Surakarta in the 2018/2019 academic year, totaling 64 students. Data obtained from the results of observations, interviews, and tests. The data analysis technique uses 2-way Anava technique. The results is study's learning using Jigsaw cooperative learning model obtain the results of cognitive learning higher significant than learning outcomes cognitive students learn by using direct learning model on the subjects of DKB in Vocational High School 2 Surakarta; cognitive learning outcomes for students who have critical thinking skills height significantly higher than the results of cognitive learning students who have the skills to think critically low on the subjects of DKB in Vocational High School 2 Surakarta; and there is a very significant interaction between the learning model and the skill level which is critical to the cognitive learning outcomes of students in the DKB subjects at Vocational High School 2 Surakarta.

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Wastewater produced during the batik production process contains toxic and difficult to decompose chemicals which can cause an increase in power of hydrogen (pH), biological oxygen demand (BOD), chemical oxygen demands (COD), total suspended solids (TSS), and heavy metals. Wastewater produced from batik or the textile industry is generally an organic compound that is difficult to decompose, which can cause environmental pollution, especially from the aquatic environment. The effluent from the batik industry in the boiling process does not meet the quality standards set by Regulation of the Minister of Environment of the Republic of Indonesia No. 5/2014 on wastewater quality standards. Natural wastewater treatment systems such as constructed wetlands (CWs) and biological sand filter be a relevant alternative in treating wastewater because of its efficiency, cost and operation. This research aims to treat batik industry wastewater using biofilter-horizontal sub surface flow constructed wetlands (HSSFCWs) integration. The results showed a decrease in efficiency for each COD, TSS, and oil and fat parameters 72.67-86.67%; 95.85-98.18%; dan 79.47-90.04%. The results of statistical analysis showed that there was a significant influence between biofilter performance and biofilter-HSSFCWs integration in a period of 3 days, 5 days and 7 days with the dependent variable. The water from batik industry waste processing still exceeds the established quality standards so that the treated water is not allowed to be discharged into water bodies. The treated water also cannot be designated by the community because it does not meet the water quality criteria in the specified water class.