“PMRI-Based Teaching Materials Using the Context of Karate Sports in Elementary School Students During the COVID-19 Pandemic”. JOURNAL OF TEACHING AND LEARNING IN ELEMENTARY EDUCATION (JTLEE) 3, no. 2 (August 21, 2020): 200–207. Accessed January 23, 2026. https://jtlee.ejournal.unri.ac.id/index.php/JTLEE/article/view/144.