PURBA, I. R. PERBANDINGAN HASIL BELAJAR SISWA DENGAN MENGGUNAKAN MODEL PEMBELAJARAN GROUP INVESTIGATION DAN NUMBERED HEAD TOGETHER PADA MATERI PENCEMARAN LINGKUNGAN DI KELAS VII SMP NEGERI 8 PEMATANGSIANTAR TAHUN PELAJARAN 2019/2020: COMPARISON OF STUDENT LEARNING OUTCOMES USING GROUP INVESTIGATION AND NUMBERED LEARNING MODELS HEAD TOGETHER ON ENVIRONMENTAL POLLUTION MATERIALS IN CLASS VII SMP NEGERI 8 PEMATANGSIANTAR 2019/2020 ACADEMIC YEAR. MetaBio : Jurnal Pendidikan (Edisi Elektronik), [S. l.], v. 3, n. 2, p. 66–77, 2021. DOI: 10.36985/jmo.v3i2.562. Disponível em: https://jurnal.usi.ac.id/index.php/metabio/article/view/562. Acesso em: 13 may. 2024.