Nazri Maulana Khani, Endah Dwi Atika, Purba PE. DEVELOPMENT OF STUDENT WORKSHEET BASED ON A REALISTIC APPROACH TO IMPROVE STUDENTS’ MATHEMATICAL PROBLEM-SOLVING ABILITIES AT SMP NEGERI 30 MEDAN. Algebra [Internet]. 2026 Jun. 23 [cited 2026 Sep. 13];6(2):615-20. Available from: https://algebra.yana.or.id/index.php/ejournal/article/view/288