This research was conducted to obtain lecture tools (syllabus, SAP, textbooks and worksheets) that use metacognitive strategies, and see the effectiveness of lecture tools in shaping students' abilities to solve mathematical problems. The research design used is ADDIE development research. This research will be conducted on third semester students of the PGSD study program, Faculty of Education and Humanities, Pelita Bangsa University, TA 2022/2023 in the Elementary Mathematics Learning course. This teaching material is declared valid based on the validation results of experts, practitioners and media experts which are marked by the acquisition of a hih score so that it is suitable for use. Penelitian ini dilakukan untuk mendapatkan perangkat perkuliahan (silabus, SAP, buku ajar dan LKS) yang menggunakan strategi metakognitif, serta melihat keefektifan perangkat perkuliahan dalam membentuk kemampuan mahasiswa dalam memecahkan masalah matematika. Desain penelitian yang digunakan adalah penelitian pengembangan ADDIE. Penelitian ini akan dilakukan pada mahasiswa semester tiga program studi PGSD Fakultas Pendidikan dan Ilmu Budaya Universitas Pelita Bangsa TA 2022/2023 pada mata kuliah Pembelajaran Matematika SD. Bahan ajar ini dinyatakan valid berdasarkan hasil validasi ahli, praktisi dan ahli media yang ditandai dengan perolehan skor hih sehingga layak digunakan.

In accordance with the level of his age, learning mathematics in elementary schools should start from a concrete concept first before students are brought to the concept in the form of abstract mathematical symbols. Local culture of the community becomes a real part that is faced by students in their daily lives. So the use of local culture as a mathematics learning content can lead students to a concrete mathematics learning experience. This paper tries to explain the results of research focusing on the development of local culture-based mathematics teaching materials in the Cirebon community. The purpose of this study was to produce mathematics materials based on the local culture of Cirebon society. Teaching material developed meets valid and effective criteria. the type of research used is development research with ADDIE (Analysis, Design, Development, Implementation, Evaluation) procedures. The results of this study indicate an increase in students' mathematical understanding after learning is applied by using local culture-based mathematics teaching materials in the Cirebon community. The increase in the average value of students 'mathematical understanding abilities is from 41 to 71. Thus, the use of local culture-based mathematics teaching materials in Cirebon society can improve students' mathematical understanding abilities.