A key component of the teaching and learning process is the use of validated instructional materials. This study validated the researcher-made Instructional Material for grade 9 learners. It employed the descriptive quantitative research design involving 90 grade 9 learners and 5 Mathematics Master Teachers chosen through purposive sampling.                 Findings revealed that the Instructional Material is Highly Valid in terms of its parts with regards to its objectives, structure, activities, and assessment. It was also found Highly Valid in terms of characteristics with regards to its accuracy, clarity, and suitability. Lastly, the perception of the learners on the use of the Instructional Material based on the structure and usability were Highly Structured and Highly Usable.                 It was revealed that there was a significant change in the pretest and posttest scores of students which indicated an improvement of their knowledge on the topics taught. However, it was revealed that there is no significant relationship on the posttest scores and learners perception on the use of the Instructional Material.                 It is recommended that the Instructional Material be used on broader scope to improve the effectiveness and practicability of the Instructional Material.

assessment

objectives