Implementasi Metode Problem Solving Pada Materi Pengukuran Panjang dan Berat di SD Kelas 3. IEC-JEI [Internet]. 2026 Jun. 27 [cited 2026 Sep. 24];2(3):91-101. Available from: https://research.iecjournal.com/index.php/IEC-JEI/article/view/56