Jurnal Pendidikan dan Pembelajaran Matematika Indonesia (JPPMI) Vol. 10 No. 2 (2021) contains 6 scientific articles addressing various issues in mathematics education and learning, including the influence of the Pair Check cooperative learning model on students’ understanding of mathematical concepts, the implementation of the Treffinger model supported by structured worksheets, the use of the Problem-Based Instruction model supported by Jigsaw Puzzle activities to improve problem-solving skills, the implementation of Process Oriented Guided Inquiry Learning (POGIL) supported by modules, realistic mathematics learning through modeling to improve mathematical communication skills, and the development of GeoGebra-based instructional materials incorporating authentic assessment.

The articles involve researchers and academics from Ganesha University of Education in Singaraja, Bali, as well as teachers and researchers collaborating with schools across Bali, including SMP Negeri 1 Marga, SMP Negeri 2 Banjarangkan, and SMP Negeri 3 Banjar. These contributions reflect ongoing efforts to develop instructional models, learning media, and teaching strategies to improve the quality of mathematics education.