Abstract
The authors explored the effectiveness of didactic materials in promoting the interest of 9th-grade students in biology. This study was conducted at KSU "General Secondary School No216" and consisted of 25 students. Results of pre-test and post-test were compared to assess the outcome of learning. A methodological guide, Didactic Materials for Teaching Biology, was used throughout the study, with its use of visual aids, practical exercises, interactive activities, and inquiry-based tasks. Results indicated that 84% of students scored significantly better in their knowledge, and 48% achieved the highest gains. The largest improvement was observed in those students who actively participated in interactive and visual components, with moderate improvement (36% of students) making progress in those who were less involved in the inquiry-based activities or who needed help. The results of this study demonstrate the usefulness of didactic materials for improving students' knowledge and also for encouraging interest in them as well as their motivation.The results of the study demonstrated the effectiveness of using didactic materials for 9th-grade students and practically proved the relevance of the topic