Development and Validation of Inclusive Mathematics Worksheets on Angles for Grade 7 Learners: Addressing Student Challenges and Enhancing Competencies Under the Matatag Curriculum

Abstract Globally, there is a growing focus on creating inclusive educational resources to support diverse learners in mastering fundamental concepts, ensuring equitable access to quality education and improving mathematical skills across various curricula. Thus, this study focuses on developing inclusive mathematics worksheets on angles for Grade 7 learners at Koronadal National Comprehensive High School, aiming to address student challenges and enhance competencies under the MATATAG curriculum. The researcher employed a Developmental Research Design and utilized the Input-Process-Output (IPO) framework through the Analysis, Design, Development, Implementation, and Evaluation (ADDIE) model to produce the worksheet. The study involved mathematics teachers, mathematics master teachers, and Grade 7 learners. To assess the effectiveness and acceptability of the developed worksheets, the researcher used statistical tools, specifically the mean and t-test, to analyze the evaluators' assessments. The results showed that the evaluators rated the developed worksheets very highly. There was no significant difference in the evaluation of mathematics teachers, master teachers, and Grade 7 learners on the acceptability of the inclusive mathematics worksheets on angles. Hence, the developed worksheets are valid and suitable as instructional materials to improve learners’ academic performance and develop critical, creative, and problem-solving skills.