In Grade 8 biology class, we engaged in a series of practical activities, including plant asexual reproduction, experiments on chicken egg structure and function, and silkworm rearing. Through these activities, we delved into the processes of biological reproduction and development, while fostering students' observational and recording skills. We gained firsthand experience with the life cycle and reproductive process of silkworms. We observed the development stages and characteristics of silkworm eggs, larvae, pupae, and adult butterflies. By providing suitable food and environmental conditions, we observed and documented the growth and changes of silkworms. This activity provided us with a deeper understanding of insect reproductive methods and life cycles.