This study aimed to test the effectiveness of the contextualized instructional material called Mathematics Designed Alternative Learning Intervention (MathDALI) in teaching measures of central tendency and variability among Grade 7 students of Alejandra B. Tambago High School. This employed quantitative (quasi-experimental) and qualitative research methods and participated by twenty (20) selected Grade 7 students. DepEd continue reading : MathDALI: An Instructional Material in Teaching Measures of Central Tendency and Variability among Grade 7 Students