Development of a Guided Inquiry-Based Chemistry Laboratory Manual with Learning Videos for Grade X Senior High School

Abstract

Chemistry learning in senior high schools level often encounters challenges due to the abstract nature and broad scope of the material, which make it difficult for students to understand and lead to low learning outcomes One solution is laboratory practice, which provides direct learning experiences.An observation at Methodist El Shadday Senior High School showed that no chemistry laboratory manual was available, and the textbooks used did not include practical activities. This research was conducted to design a chemistry laboratory manual based on the guided inquiry model. The guided inquiry model was selected as it guides students to ask questions, develop hypotheses, conduct experiments, and draw conclusions. The manual also introduces laboratory tools, materials, and safety guidelines to ensure safe laboratory activities. The research applied a Research and Development (R&D) approach using the ADDIE model up to the development stage. The product was validated by three chemistry lecturers and three chemistry teachers using instruments based on BSNP standards. Validation by lecturers showed scores of 88.46% for content, 82.5% for presentation, 87.03% for language, 88.88% for graphics, and 89.39% for guided inquiry. Teacher validation showed 96.66% for content, 96.66% for presentation, 96.29% for language, 96.82% for graphics, and 95.54% for guided inquiry. All results were categorized as feasible. The results show that the laboratory manual developed is suitable to be used as a learning resource. It is anticipated that this product will help improve students’ academic performance as well as their scientific process skills through hands-on laboratory activities.