Improving Rope Jumping Abilities Using The Demonstration Method In Grade IV Students of SD Inpres 1 Besusu. Compet. J. Pendidik. Kepelatihan Olahraga [Internet]. 2025 Oct. 8 [cited 2025 Dec. 8];17(3):2447-51. Available from: https://competitor.idjournal.eu/index.php/competitor/article/view/345