Hidayah TNA, Jana P. Pengembangan Bahan Ajar Matematika Berbasis Problem Based Learning untuk Memfasilitasi Math Engagement Siswa SMP. JKPM Jurnal Kaji. Pendidik. Mat. [Internet]. 2025 Dec. 31 [cited 2026 Jun. 2];11(1):63-76. Available from: https://newjournal.lppmunindra.ac.id/index.php/jkpm/article/view/1957