Mangelep, Navel Oktaviandy, Deiby N. F. Tiwow, Murni Sulistyaningsih, Ontang Manurung, and Kinzie F. Pinontoan. 2023. “The Relationship Between Concept Understanding Ability And Problem-Solving Ability With Learning Outcomes In Algebraic Form ”. Innovative: Journal Of Social Science Research 3 (4):4322-33. https://j-innovative.org/index.php/Innovative/article/view/4050.