TAMPUBOLON, S.; SIHALOHO, F. A. S.; HASIBUAN, V. U. IMPROVING STUDENT LEARNING OUTCOMES IN MATHEMATICS SUBJECTS USING PROBLEM SOLVING METHODS IN CLASS IV SD 107400 B. KHALIPAH ACADEMIC YEAR 2020-2021. REKOGNISI : Jurnal Pendidikan dan Kependidikan (E-ISSN 2599-2260), [S. l.], v. 7, n. 2, p. 28–34, 2022. Disponível em: https://jurnal.unusu.ac.id/index.php/rekognisi/article/view/152. Acesso em: 5 jun. 2026.