NADTAYAY, Nawaporn; NAJAH, Shofiyatul; SIMPOL, Wanida. The Development Of Learning Achievement In English Languages Of Grade6 Students In Covid-19 Situation By Applying The Flipped Classroom Concept Inverted. Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC), [S. l.], v. 1, n. 2, p. 216–232, 2021. DOI: 10.30587/umgeshic.v1i2.3384. Disponível em: https://journal.umg.ac.id/index.php/umgeshic/article/view/3384. Acesso em: 5 jun. 2025.