Pengembanngan Bahan Ajar Sistem Persamaan Linear Dua Variabel Dengan Pendekatan Scientific Berbasis Website Untuk Membelajarkan Kemampuan Pemecahan Masakah Matematika Siswa

Abstract

This development research aims to 1) Knowing the validity of developing website-based twovariable linear equation system teaching materials, 2) Knowing the practicality of using web-based twovariable linear equation system development teaching materials in learning activities, and 3) Knowing the effectiveness of developing linear equation system teaching materials two website-based variables to teach students' mathematical problem solving skills. This research is a Research and Development (R&D) research with the ADDIE development model, where this research consists of 5 stages, namely, 1) Analysis Phase, 2) Design Phase, 3) Development Phase, 4) Implementation Phase and 5) Evaluation Phase. The instruments used include 1) a questionnaire sheet in the form of a validation questionnaire by an expert to see the validity of the product and student response questionnaires to see the practicality of the product, as well as 2) a test sheet to test the effectiveness of the developed product being tested on 24 students in class X MIA 1 SMA N 1 Angkola East. Based on the results of this study, the product validity was obtained with an average percentage of 89% in the " Valid" category, product practicality with an average percentage of 85% in the "Practical" category, and product effectiveness with an average percentage of 79,74% with the category "Effective".It can be concluded that the development of website-based two-variable linear equation system teaching materials to teach students' mathematical problem solving skills is valid, practical and effective.