ANGLE (ANALYZE, NOTE, GET, LOGIC, EVALUATE) APPROACH IN IMPROVING SOLVING SKILLS IN ANGLE OF ELEVATION AND DEPRESSION AMONG GRADE 9 STUDENTS

This study examined the effectiveness of the ANGLE Approach in improving Grade 9 students skills in solving problems related to angles of elevation and depression. Using a pre-experimental one-group pretest-posttest design, data were collected from 42 purposively selected students through both pre/post assessments and in-depth interviews. The ANGLE Approach consisted of structured lessons, a step-by-step process, and contextualized instruction aimed at developing a deeper understanding of trigonometric concepts. Results revealed a significant improvement from a mean pre-test score of 1.43% (poor) to a post-test score of 33.02% (needs improvement), confirmed by a paired t-test, t(41) = 11.03, p < .001. Qualitative findings supported these results, highlighting five themes: (1) encountering difficulties in solving trigonometry prior to the ANGLE Approach; (2) enhancing problem-solving skills through step-by-step methods and continuous practice; (3) enhancing conceptual understanding to improve accuracy and visualization in problem-solving; (4) enhancing learning through real-world application; and (5) believing that interactive activities enhance learning. Overall, the ANGLE Approach proved to be an effective intervention for improving both the performance and learning experiences of students tackling problems involving angles of elevation and depression. Keywords: ANGLE Approach, intervention, problem-solving skills, step by step, Philippines