This research aims to develop an electronic module (e-module) based on problem-based learning (PBL) integrated into Science, Technology, Engineering, and Mathematics (STEM) assisted by social media to improve students’ critical thinking skills in a dynamic fluid material. The development of this research used a mixed-method consisting of qualitative and quantitative data. This study involved 308 students and 17 physics teachers in Lampung province. The results of the preliminary research conducted by only 12.5% of teachers used STEM integrated PBL-based e-modules to improve students’ critical thinking skills and 46.6% of students stated that they only used printed books when physics learning. 100% of teachers and 88.2% of students stated that they need e-modules to make learning easier. 50% of teachers stated that they use social media as a learning tool. Based on the results of the preliminary study, the use of e-modules is needed by teachers and students. A need analysis needs to be done for the development of E-Module integrates STEM-assisted PBL-based social media to enhance students’ critical thinking skills.

This study aims to determine the role of social media in learning. We know that today, social media has an indispensable role in the learning process. In addition, social media has made it a smaller world through social media so that people from anywhere in the world can interact without being limited by distance and time. This study used a mixed-method consisting of qualitative and quantitative data. This research involved 308 students in Lampung province. The results of the research conducted stated that 65% of students used smartphones in learning. 73.2% of students stated that the application that is often opened is social media. 87.2% stated that the most frequently accessed social media is chatting media. 48.2% of students prefer playing on social media for learning physics. 72.3% of students stated that they prefer to discuss through chatting media. Based on the results of the preliminary study, the role of social media is very active, 48% of students stated that they use social media for learning discussions. . 43% of teachers stated that they always use social media to support learning. Keywords: social media, physics learning, smartphone

Penelitian ini bertujuan untuk mengetahui pengaruh pemanfaatan mobile instant messaging (MIM) WhatsApp terhadap self efficacy dan kemampuan kognitif siswa pada materi Hukum Newton. Desain penelitian yang digunakan adalah non-equivalent control group design. Penelitian ini menggunakan subyek siswa SMAN 9 Bandar Lampung kelas XI MIPA 1 sebagai kelas kontrol dan kelas XI MIPA 2 sebagai kelas eksperimen yang berjumlah masing-masing 30 siswa pada Semester Ganjil Tahun Ajaran 2018/2019. Teknik analisis data yang digunakan adalah independent sample t-test untuk uji parametrik dan Mann-Withney U-test untuk uji non parametrik. Berdasarkan hasil analisis data, diperoleh bahwa rata-rata post-test self efficacy pada kelas eksperimen 80,1 sedangkan pada kelas kontrol 67,06. Rata-rata postest kemampuan kognitif siswa pada kelas eksperimen 81,33 dan pada kelas kontrol 73,66. Perbedaan kedua kelas baik pada self efficacy dan kemampuan kognitif sangat  signifikan dimana nilai kelas eksperimen lebih tinggi dibandingkan nilai kelas kontrol. Dengan demikian, dapat disimpulkan bahwa self efficacy dan kemampuan kognitif siswa yang memperoleh pembelajaran berbantuan MIM WhatsApp lebih baik dibandingkan dengan kelas yang tidak menggunakan WhatsApp.