ISSN: 2782-893X
eISSN: 2799-0664
ISSN: 2782- 893X
This study assessed the level performance in Mathematics instruction of the Grade 1 pupils of Palacpalac Elementary School based on the Pre-test and Post-test during the school year 2020-2021 as the basis for the development and validation of InfoSIM in Mathematics to improve the performance of Grade 1 pupils. This study used the Descriptive and Developmental method of research to determine and analyze the difficulty of Grade 1 pupils based on the learning competency of K to 12 Basic Education. The developed InfoSIM was based on the least mastered competencies from the first quarter to the second quarter, following the steps in instructional materials development. The sources of data in the study consisted of education specialists in Mathematics. Findings of the study are the following: (1.0) On the performance of the pupils, posttest scores showed high rating upon the administration of the InfoSIM among Grade 1 pupils