Mangelep, Navel Oktaviandy, Deiby N. F. Tiwow, Murni Sulistyaningsih, Ontang Manurung, and Kinzie F. Pinontoan. “The Relationship Between Concept Understanding Ability And Problem-Solving Ability With Learning Outcomes In Algebraic Form ”. Innovative: Journal Of Social Science Research 3, no. 4 (September 7, 2023): 4322–4333. Accessed April 22, 2026. https://j-innovative.org/index.php/Innovative/article/view/4050.