Development of student worksheets based on contextual teaching and learning on the topic vibration and waves to build junior high school observation skills

Abstract

The purpose of this research was to product Student Worksheet (LKPD) based on Contextual Teaching and Learning on the topic of vibrations and waves that have valid criteria so that it can be used in learning activities for junior high school students to build their observation skills. This development research uses the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The instruments used in this study include validation sheets (materials and teaching materials experts) and the Observation Skills Assessment Rubric. The implementation stage is carried out in junior high schools in the Belitang Mulya sub-district. The results of this LKDP development research were obtained; 1) Valid with a score of 4.59 (material expert) and 3.09 (teaching material expert), 2) Valid with a score of 4.09 on a small-scale trial, 3) The implementation results obtained an average that students' observation skills were developed by 89.56% consisting of preparation of tools and materials, maximum use of senses, writing down relevant facts, drawing conclusions. Thus, it can be concluded that the CTL-based worksheets on the topic of vibrations and waves that were developed meet the valid criteria to be used for learning for junior high school students and can be used to build students' observation skills