Jaka Fandrifo, Ali Asmar, Yerizon, Dony Permana
The purpose of this research is to produce learning instruments Blended Learning models that are valid, practice and effective in improving mathematical communication skills for 7th grade junior high school students. Learning instruments that were developed were Learning Implementation Plan (RPP), Learning Video, and Student Worksheet (LKPD) for 7th grade junior high school. This research is a development research with Plomp model which consists of three phases namely preliminary research, prototyping phase and assessment phase. The preliminary research phase aims to collect the data that is the basis of the characteristics of the developed learning instruments. In prototyping phase, researchers designed and evaluated the prototype by using formative evaluation steps. The subject of the field test in this study were 7th grade students at SMPIT AL-BINA Dharmasraya in the 2022/2023 academic year. The analysis results of validation sheets for RPP, Learning Video, and LKPD show that learning instruments that are developed are valid in terms of construct and term of content. The learning instruments developed are also practical in terms of feasibility and ease of use. This is based on the analysis of the results of questionnaires for students and learning implementation observation sheets. In addition, the learning instruments developed have also been effective in improving students' mathematical communication skills based on the data on the results of the mathematical communication skills test that has been implemented, which is 77.2% of students have obtained scores above the KKM determined by the school, that 75. © 2024 Author(s).
Department of Mathematics, Universitas Negeri Padang, Padang, Indonesia
