Muh. Hifni 2020. THE EFFECT OF PROBLEM BASED LEARNING (PBL) LEARNING MODEL ON LEARNING OUTCOMES IN THE THEME OF "TWO CLEAN AIR FOR HEALTH" CLASS V MI NW AIKMEL. Al-Mujahidah. 1, 2 (Oct. 2020), 130-146. DOI:https://doi.org/10.51806/al-mujahidah.v1i2.17.