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Increasing student learning activity needs to use a learning model. In a lesson there are methods that are used systematically which become a unified procedure in the delivery of learning material so that the learning objectives are achieved. This study aims to determine the application of science process skills in science subjects to the activeness of students at MTs Muhammadiyah Parumaan. This research uses a descriptive method with a qualitative approach. This descriptive research method is used because it relates to the topics and problems that will be discussed, namely the application of science process skills in science subjects to the activeness of students at MTs Muhammadiyah Parumaan. The learning activity of VII B students at MTs Muhammadiyah Parumaan was based on the results of the supervision of the school principal when the teacher taught classes using conventional methods, not all students had active learning during the learning process. Researchers apply learning with science process skills. The results showed that the application of process skills to class VII B students at MTs Muhammadiyah Parumaan experienced an increase from the low category to the medium category    

The change in the Merdeka Curriculum has made learning tools in various subjects including biology in class X inadequate. This study aims to determine the feasibility of Problem-Based Learning (PBL) based LKPD (student worksheet) accompanied by Science Process Skills (KPS) on the material of environmental changes in class X. The development model refers to the research and development (R&D) method with 5 stages. The stages are potential and problems, data collection, product design, design validation, and design revision. The research instruments used were instrument validation questionnaires and validation sheet questionnaires. The validated aspects are the format, content, language, and benefits/usability of LKPD. Validation was carried out by 5 validators. Analysis of validation results using face validity Aiken's V with criteria V = 0.87. The results showed that the LKPD met the valid criteria with a total average of 0.947. It can be concluded that problem-based learning-based LKPD accompanied by science process skills is declared valid and ready to proceed to the trial stage.