WISITTHIPONG, Woravalan; RAHMAWATI, Yossi; SIMPOL, Wanida. APPLYING OF THE FLIPPED CLASSROOM CONCEPT TO DEVELOP LEARNING ACHIEVEMENT IN ENGLISH LANGUAGES OF GRADE 4 STUDENTS IN COVID-19 SITUATION. Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC), [S. l.], v. 1, n. 2, p. 11–19, 2021. DOI: 10.30587/umgeshic.v1i2.3362. Disponível em: https://journal.umg.ac.id/index.php/umgeshic/article/view/3362. Acesso em: 5 jun. 2025.