MAIN CHALLENGES IN DISTANCE LEARNING IN NATURAL SCIENCES (TEACHERS EXPERIENCE IN LOWER SECONDARY SCHOOL)
MAIN CHALLENGES IN DISTANCE LEARNING IN NATURAL SCIENCES (TEACHERS EXPERIENCE IN LOWER SECONDARY SCHOOL)
S. Petrova, D. Karagyozova-Dilkova, Z. Raykova, M. Atanasova, K. Katsarova, D. Dimova, K. Vitlarov, A. Mollov, M. Dakova