PENERAPAN MODEL PROJECT BASED LEARNING (PJBL) PADA PEMBELAJARAN MATEMATIKA MATERI BANGUN RUANG SISI LENGKUNG. jsoscied [Internet]. 2024 Nov. 30 [cited 2026 Apr. 18];7(2):783-9. Available from: https://jurnal.poltekstpaul.ac.id/index.php/jsoscied/article/view/884