Development of LKPD on Project Based Learning to Improve Science Process Skills and Collaboration Skills for Junior High School Students

This research is an R&D approach using the ADDIE model which consists of five main stages: analysis, design, development, implementation and evaluation. The aim of the research is to determine the validity, practicality and effectiveness, as well as investigate the application of PjBL-based LKPD to students' science process and collaboration skills at SMPN 3 Bumi Raya Satap. Data collection techniques included interviews, documentation, validation, surveys, observation to measure collaboration skills, and written tests to examine science process skills. Research instruments included interview guides, teacher and student response questionnaires, collaboration skills observation sheets, and science process skills tests. The results of data analysis showed that the PjBL-based LKPD was retrieved very valid with a score of 3.36, very practical with a score of 4.46, and effective with an effect size (d = 0.84) categorized as having a large influence. The implementation of PJBL-based LKPD has a big influence in improving science process skills (d = 0.97) and a moderate influence on improving collaboration skills (d = 0.32). In conclusion, PjBL-based LKPD has a significant positive impact on improving students' science process and collaboration skills.