REWAN JAYADI; SISKA YOSMAR. SMART BOOK MATHEMATIC FOR DIFABEL (SOMABEL): WEBSITE-BASED MATHEMATICS LEARNING MEDIA FOR MENTALLY DISABLED STUDENTS USING CARDBOARD WASTE. EduMatSains : Jurnal Pendidikan, Matematika dan Sains, v. 8, n. 2, p. 217-227, 1 Feb. 2024.