Aurelia: Jurnal Penelitian dan Pengabdian Masyarakat Indonesia E-ISSN: 2964-2493 P-ISSN: 2962-0430 Vol. 2 No. 1 January 2023 Hesti Filmiari, et al. – Universitas PGRI Sumatera Barat 491 The Effect of Applying the Window Shopping Learning Model on the Mathematics Learning Outcomes of Grade VIII Students at SMP Negeri 29 Sijunjung Hesti Filmiari 1 Ramadoni 2 Dewi Yuliana Fitri 3 Mathematics Education Study Program, Faculty of Science and Technology, Universitas PGRI Sumatera Barat, Kota Padang, Provinsi Sumatera Barat, Indonesia 1,2,3 Email: hestifilmiari@gmail.com 1 Abstract This research is motivated by the low results of students' mathematics learning. The purpose of this study was to determine the effect of applying the window shopping learning model to the learning outcomes of class VIII students at SMP Negeri 29 Sijunjung. This type of research is experimental research with a quantitative approach. The research design used was the Post-Test Only Control Group Design. The research population was all students of class VIII at SMP Negeri 29 Sijunjung. The technique used in sampling is simple random sampling. The research sample was class VIII 1 as the experimental class and class VIII 3 as the control class. The research instrument used in this study was in the form of a post-test in the form of a description. Furthermore, testing the hypothesis using the one-sided t test to be precise the right side. The results showed that the class using the window shopping learning model had an average of 64.79 and the class using the conventional learning model had an average of 51.04. The results of the hypothesis test obtained tcount = 2.10 and ttable = 2.00, then tcount > ttable so that the hypothesis is accepted. Thus it can be concluded that there is an effect of applying the window shopping learning model to the learning outcomes of class VIII students at SMP Negeri 29 Sijunjung. Keywords: Mathematics Learning Outcomes, Window Shopping Learning Model This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License INTRODUCTION Mathematics has an important role in human education. Mathematics has been introduced to students from the elementary level to a higher level to equip students to think logically, analytically, systematically, critically and creatively, as well as the ability to work together (Pertiwi, 2017). One field of study that has an important role in education both in the development of science and technology, as a tool in the application of other fields of science and in the development of mathematics itself is the understanding of learning mathematics (Hasanah, 2021). The process of learning mathematics is a process of interaction between teachers and students in order to achieve learning objectives where students as students at the same time receive lessons resulting in a learning process. Success or failure of learning objectives can be seen in student learning outcomes. Learning outcomes are the main benchmark to determine student success. Learning outcomes can be influenced by two factors, namely internal factors and external factors (Hasanah, 2021). The fact that was found in schools, the mathematics learning outcomes obtained by students were not in line with expectations. This can be seen from the percentage of completeness in mathematics learning outcomes for class VIII students of SMPN 29 Sijunjung for the 2022/2023 academic year which is presented in Table 1: