Alfillah, M. and Ananda, Y. 2026. DESIGN AND DEVELOPMENT OF A PLASTIC BOTTLE AND METAL WASTE SORTER WITH REWARD EXCHANGE COINS. Algebra : Jurnal Pendidikan, Sosial dan Sains. 6, 4 (Nov. 2026), 627–632. DOI:https://doi.org/10.58432/v3a48k49.