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This research aimed at analysing the effectiveness of Problem Based-Hybrid Learning (Pro-BHL) to enhance the critical thinking skill (cts) of the students of SMA in Physics teaching. Pro-BHL model is a model of teaching which combines facetoface PBL and online learning. Pro-BHL model is effective to enhance cts if: 1) there is a significant improvement in the students' cts at =5%; and 2) The minimal N-gain average falls into medium category or consistent. This study involved 86 students who spread into three groups of grade X. The design of this study was one group pre-test and post-test group design. Before the teaching using Pro-BHL model, the students in three groups were given a cts test (pre-test). And at the end of the teaching, the students were given the same test (post-test). The collected data were analyzed by Paired-Test, normalized gain (N-gain T-Test) and ANOVA. The result showed that: (1) the teaching with Pro-BHL model can enhance the students' cts ( =5%); (2) the N-gain average for the three groups falling into high category; and (3) do not differ from one another. Thus, it this can be concluded that the Pro-BHL model is effective to enhance the students' cts in physics teaching.
Sujanem et al. (Mon,) studied this question.