Hulu, A.C., Liliana Puspa Sari and Sembiring, I. 2020. Efforts to Improve Learning Outcomes of Badminton Forehand Lob Game Using Problem Base Larning Method. Jumper: Jurnal Mahasiswa Pendidikan Olahraga. 1, 1 (Oct. 2020), 1-8. DOI:https://doi.org/10.55081/jumper.v1i1.120.