ONLINE – MERGE – OFFLINE (OMO) CLASSROOM MODEL AS INNOVATION TO IMPROVE STUDENTS’ MASTERY LEVEL AND ATTITUDE IN TEACHING BALANCING CHEMICAL EQUATION. Wor.Bul.Soc.Sci. [Internet]. 2021 Oct. 22 [cited 2026 Apr. 18];3:28-33. Available from: https://www.scholarexpress.net/index.php/wbss/article/view/157