Effectiveness of Problem Based Learning Model Assisted by E-Modules in Science Subjects on Students' Critical Thinking Ability and Communication Skills

This study aims to examine the use of Problem Based Learning model assisted by e-module is effective in improving students' critical thinking ability and communication skills in science learning. This research uses quasi-experimental research with quantitative data analysis. The population in this study were fifth grade students at public elementary schools in Gugus Pangeran Diponegoro, Kedungtuban Subdistrict, Blora Regency. Data collection techniques used test methods, documentation, and questionnaires. The results showed that learning using the Problem Based Learning model assisted by e-modules effectively improved students' critical thinking skills and communication skills in science learning for fifth grade students at SD 4 Ngraho and SDN 3 Kedungtuban. The data shows that the results of independent t test hypothesis testing of control and experimental classes were treated through the SPSS program where the Sig. (2-tailed) of 0.000 <0.05 then H0 is rejected, and Ha is accepted which means that the Problem Based Learning model assisted by e-modules is effective in improving students' communication skills in science learning. The results of the Mann-Whitney U test of the control and experimental classes were treated through the SPSS program where the Sig. (2-tailed) of 0.000 <0.05 then H0 is rejected, and Ha is accepted which means that the Problem Based Learning model assisted by e-modules is effective in improving students' critical thinking skills in science learning. Based on the results of the above research, it can be concluded that students' critical thinking skills and communication skills of control class and experimental class students show significant differences. This means that the Problem Based Learning model assisted by e-modules is effective for improving critical thinking skills and communication skills of fifth grade students in science learning. Suggestions related to the research results are to optimize the implementation of Problem Based Learning to further improve students' critical thinking skills and communication skills and equip students to adapt to learning in the 21st century era. Keywords: Problem Based Learning, E-Module, Critical Thinking, Communication Skills, 21st Century Learning, HOTS