Ruslan R, Setiawan HR I, Hindi ANA. The Development of Reasonable Mathematical Problems Based on Content Validity in Mathematics Teachers Conference (MGMP) of Bone Regency, Indonesia: Pengembangan Soal Matematika Berdaya Nalar Tinggi Berdasarkan Validitas Isi di MGMP Matematika Kabupaten Bone, Indonesia. j. mattawang [Internet]. 2020 Dec. 24 [cited 2026 Apr. 16];1(1):15-9. Available from: https://jurnal.ahmar.id/index.php/mattawang/article/view/169