The Relationship Between Intensity of Instagram Social Media Use and The Learning Environment with Student Concentration in Grade XI at SMA Negeri 9 Manado. HEB [Internet]. 30 Desember 2025 [dikutip 22 Maret 2026];1(2):86-94. Tersedia pada: https://ejurnal.jurkeppolkesdo.my.id/index.php/HEB/article/view/73