A shortcoming of distance learning is the lack of substantive integration of hands-on activities into online classrooms. We conducted a research and development study, where the lab kits and tutorial videos were sent to students to perform experiments in their own homes. We planned, tested, developed, improved, and implemented kits into experimental distance learning. This research was conducted to improve previous studies in linear subjects. Findings have implications for distance learning in rural areas that have limitations. Furthermore, our findings illustrate the potential amplifying effect of this learning environment configuration for science teachers. Thirty-two students, four experts, and three science teachers participated in this research. The product’ validity and feasibility were obtained by descriptive analysis of experts and students' assessment data. Students’ learning motivation and activities were observed and analyzed descriptively. Students’ cognitive learning outcomes were obtained by analyzing pretest and posttest data using paired sample t-test. This learning helped students achieve intellectual goals by significantly improving students’ learning motivation, activities, and cognitive outcomes.

Preliminary studies showed the low activity of students in science learning with classical learning completeness of 22%. This study aimed to improve students’ learning activities and learning achievements through discovery learning assisted by themed worksheets. This study improved previous research related to the implementation of discovery learning to improve the learning quality. The research was designed using the classroom action research method and was carried out in three cycles, involving 32 second grade students of secondary school. Experts validated interview, observation, and questionnaire sheets, and the test items were validated statistically. This study showed that discovery learning assisted by themed worksheets improved the average student activity to 93% and the average science learning achievements to 71.61% with a classical completeness rate of 78%. Students also accepted the themed worksheets with very high satisfaction. This study did not examine the students’ character, the correlation between activity data and student learning discovery, neither did it accommodate students with special needs. These results can be a reference for teachers to improve the quality of learning, especially for schools in rural areas that have limited technological infrastructure. Keywords: class action research, discovery learning, learning achievements, students’ activities, themed worksheets

Pedoman laboratorium tidak hanya memberi siswa pengalaman praktis tetapi juga membantu siswa untuk mengidentifikasi bahan berbahaya dan keselamatan kerja di laboratorium. Penelitian ini bertujuan mengetahui pemahaman dan kesadaran keselamatan kerja di laboratorium siswa SMP. Kuesioner survei diberikan kepada 191 siswa kelas IX SMP yang telah memperoleh materi keselamatan kerja di laboratorium. Hasil penelitian menunjukkan bahwa sebagian besar siswa mengalami miskonsepsi tentang definisi tanda bahaya bahan-bahan di laboratorium. Selain itu, sebagian besar siswa juga memiliki kesadaran keselamatan kerja yang rendah di laboratorium sekolah. Hasil wawancara menyatakan bahwa siswa tidak memperhatikan tanda keselamatan yang ada pada label kemasan bahan selama melakukan percobaan. Hasil penelitian juga memberikan informasi untuk meningkatkan kualitas pembelajaran di laboratorium, khususnya dalam meningkatkan kesadaran siswa tentang cara penggunaan, penyimpanan, dan pembuangan yang tepat bahan-bahan di laboratorium.