Aprilia Widiastuti; Maharani Putri Rahayu; Lela Rahmawati; Annisa Rahmawati Siregar; Ardi Nur Hanafi. The Improvement of Student Learning Activity Using the Problem Based Learning (PBL) Model Assisted by Smartbox Media in Grade VI at SDN 97/VI Kota Jambi. TOFEDU 2024, 3, 1948-1956.