Karaivanova- Dolchinkova, Bonka. “ANALYSIS OF GOOD PRACTICES IN STEM EDUCATION IN THE SCHOOLS OF THE VELIKO TARNOVO REGION IN THE SECOND YEAR OF THE NATIONAL PROGRAM”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 2 (June 22, 2024): 387–392. Accessed June 30, 2024. https://journals.rta.lv/index.php/ETR/article/view/8083.