Kurniawan, Putra Rahmat, Agus Kristiyanto, and Slamet Riyadi. 2022. “The Assessment Instrument Development in Physical Education Learning on Rhythm Gymnastics Materials for Upper Class Elementary School Students in Covid-19 Pandemic Era”. International Journal of Social Science Research and Review 5 (12), 13-21. https://doi.org/10.47814/ijssrr.v5i12.793.