Mark Anthony G. Del Fin | Cynthia G. Quiambao
Discipline: Education
The study aimed to develop and validate Earth Science Self-Learning Kit (ESSLK) for Grade 11 students. In addition, the study employed true experimental research design and uses two groups of participants. The first group of participants involved the three (3) content experts and two (2) educational technology experts. They evaluated the ESSLK in terms of the printed module, video lessons, and manipulatives. On the other hand, the second group of participants included the sixty (60) Grade 11 STEM students in Holy Family Academy for the school year 2023-2024 who scored below the sixty percent (60%) passing score for the pretest served as the subject of the study. These participants were divided into two groups which consist of thirty (30) participants for the controlled group and thirty (30) participants for the experimental group using random sampling technique. Research findings revealed that there is a significant difference between the pretest and posttest score of the experimental group with a mean score of 39.60 (SD = 3.01), significantly surpassing the pretest mean score of 18.30 (SD = 3.26), t(29) = 43.32, p < 0.001, Cohen’s d = 7.91. This meant that using the ESSLK improved the performance of the participants by reading the printed module, watching the video lessons, and utilizing the manipulatives. The study concluded that employing the developed and validated ESSLK encourages students to perform better and perceive the subject as more enjoyable. Therefore, it is recommended that teachers and administrators should encourage the implementation of self-directed learning strategies in teaching science to promote lifelong learning for the students.