Lantanida Journal, Vol. 7 No. 2 (2019) 101-193 PENGGUNAAN MODEL PEMBELAJARAN SCIENCE, TECHNOLOGY, ENGINEERING, AND MATHEMATIC (STEM) PADA KONSEP ASAM BASA DI SMAN 1 BAITUSSALAM Haris Munandar 1* , Lia Maghfira Izzani 2 , Muammar Yulian 2 1 Program Studi PGSD, STKIP Bina BangsaGetsempena, Banda Aceh, Indonesia 2 Program Studi Pendidikan Kimia, UIN Ar-Raniry, Banda Aceh, Indonesia Email: harisdda07@gmail.com ABSTRACT Based on observations at SMAN 1 Baitussalam, information was obtained that learning outcomes of students on acid-base material were still low, this was caused by the process of learning chemistry that was still teacher-centered and didn’t use specific learning models. The STEM learning model is a One learning model that can be used as solution to this problem is the learning model of Science, Technology, Engineering, and Mathematics (STEM). The purpose of this study was to obtain information about the effect of the STEM learning model on learning outcomes and student responses, especially on the concept of acid-base in SMAN 1 Baitussalam. This study uses Quasi Experimental design, with data collected through test and questionnaires. Student test results were analyzed using SPSS Version 23.0, where the significance value obtained from the t-test analysis was 0,000<0.05 so it can be seen that H0 was rejected and Ha was accepted. Student responses obtained through questionnaires analyzed based on the percentage answers provided by students, the results showed that 93% responses of students were very interested in the STEM learning model. These results indicate that STEM learning model is effective in improving student learning outcomes in SMAN 1 Baitussalam, especially in acid-base concept. Keywords: Science, technology, engineering, mathematic, acid-bases. ABSTRAK Berdasarkan hasil observasi di SMAN 1 Baitussalam diperoleh informasi bahwa hasil belajar peserta didik pada materi asam basa masih rendah, hal ini disebabkan oleh proses pembelajaran kimia masih berpusat pada guru serta tidak menggunakan model pembelajaran yang spesifik. Salah satu model pembelajaran yang bisa digunakan sebagai solusi dalam permasalahan ini adalah model pembelajaran Science, Technology, Emgineering, and Mathematic (STEM). Tujuan penelitian ini adalah untuk mendapatkan informasi tentang pengaruh model pembelajaran STEM terhadap hasil belajar dan respon peserta didik khususnya pada konsep asam basa di SMAN 1 Baitussalam. Penelitian ini menggunakan desain Quasi Eksperimen, dengan data yang dikumpulkan melalui tes dan angket. Hasil tes peserta didik dianalisis dengan menggunakan SPSS Versi 23,0, di mana