INTRODUCTION The ability to add numbers is a foundational skill for children to achieve proficiency. In the school context, it is observed that there is a poor performance in numeracy.  Even in face-to-face delivery of instruction, the researcher noted that primary and intermediate learners struggled   with basic Mathematical skills such as addition, subtraction, multiplication, continue reading : [Research Bulletin] JAO to DO It: Workbook an Intervention Material for Developing Mathematical Skill in Addition of 2 to 3 Digit Numbers of 2 Pupil in Matalaba Elementary School