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This study was aimed at investigating the effect of Socio-scientific Problem Based Learning towards metacognitive skills and achievement in class. As a study implementing quasi experiment with non-randomized control group pretest-posttest design. The samples used in the study consisted of an experimental group (X-F) and a control group (X-G) and were selected randomly from the population of the 10 th grade students of SMAN 4 Malang whose linearity had been tested. The variables examined consisted of two independent variables which are Socio-scientific Problem Based Learning in the experimental group and discovery strategy in the control group; and two dependent variables namely metacognitive skills and student’s cognitive achievement. The hypothesis testing used anakova with significance level of 0,05 (p<0,05) and employed the pretest and posttest score as data. The study finding show that Socio-scientific Problem Based Learning affects the student’s metacognitive skills and cognitive achievement
Rizkita et al. (Sat,) studied this question.