Widyastri RA, Hasibuan VU. MASTERING STUDENT WORKSHEETS (LKS) ON WATER RECYCLING MATERIALS USING CONTEXTUAL TEACHING AND LERANING MODELS TO IMPROVE CLASS V STUDENT LEARNING OUTCOMES SDIT AL-KHAIR DELI SERDANG DISTRICT Q.A 2019/2020. REKOGNISI [Internet]. 2020 Jun. 1 [cited 2025 Apr. 17];5(1):39-4. Available from: https://jurnal.unusu.ac.id/index.php/rekognisi/article/view/131