Manuel PJV. Flipping the Mathematics Classroom Using Video Lessons and Learning Activity Sheets (ViLLAS): Its Effects on the Learning Outcomes of Grade 8 Learners. AIDE-IRJ [Internet]. 2026 May 1 [cited 2026 Aug. 8];16(1):374-91. Available from: https://journal.aide-inc.net/index.php/aide-irj/article/view/286