rahmawati E, Irdamurni I. The Development of Student Work Sheets Based on Teaching and Learning Approaches to Improve the Capability of Problem Solving of Basic Class IV Students. IJEDS [Internet]. 1Jun.2019 [cited 3Jul.2024];1(2):33-8. Available from: http://ijeds.ppj.unp.ac.id/index.php/IJEDS/article/view/91