ISSN: 2782-893X
eISSN: 2799-0664
ISSN: 2782- 893X
—— The study focused on the acceptability and effectiveness of the developed androidbased Electronic Strategic Intervention Materials (E-SIMS) on the Selected Topics in Genetics. The study was conducted at Dalig National High School, to selected Grade 9 Learners during the first quarter of the School Year 2022-2023. Topics included in the material are the Different Patterns of Non-Mendelian Inheritance, which was ranked first for three consecutive school years in terms of least mastered learning competency. The study used quasi-experimental research method. The teacher-validators rated the E-SIMS as “very acceptable” in all the criteria presented in the adapted and validated research instrument. Afterward, the purposively selected 46 Grade 9 learners were divided into two groups. The higher increase in the mean score of the E-SIMS group versus the non-E-SIMS group suggests that the developed E-SIMS has greatly improved learners’ academic performance. In both groups, learners’ performance on the pretest was significantly different from their performance on the posttest. The performance of learners in the non-E-SIMS group was significantly different from that of learners in the E-SIMS group. As a result, a significant difference in assessment scores of both groups proved the effectiveness of E-SIMS. The study found out that in terms of reteaching the unmastered competency, E-SIMS has a “very acceptable” overall rating and thus aids in improving Grade 9 learners’ academic performance on the identified least mastered competency. The following recommendations are made in light of the findings: Science teachers may use the developed E-SIMS as additional teaching material in teaching Genetics; School administrators may provide learning opportunities for Science teachers such as seminars, Learning Action Cell (LAC) Sessions, and Focus Group Discussions (FGDs) on how to develop their E-SIMS in their area of expertise so that there are still prepared materials for distance learning in the occurrence of an unexpected event; Learners may concentrate more on learning the newly developed E-SIMS in Genetics to improve their academic performance; and Future researchers may develop E-SIMS that can work not only in android but also in other operating systems. Keywords — Electronic Strategic Intervention Materials, Quasi-experimental, Acceptability, Effectiveness