“PENGARUH PENERAPAN MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SISWA MATERI BANGUN RUANG SISI LENGKUNG KELAS IX SMPN 3 TONDANO”. 2025. SOSCIED 8 (1): 86-93. https://doi.org/10.32531/jsoscied.v8i1.915.