ATADOGA, M. M. IDENTIFICATION ’AND ANALYSIS OF CONCEPTS PERCEIVED AS DIFFICULT TO TEACH BY SCIENCE TEACHERS. Sokoto Educational Review, [S. l.], v. 12, p. 43–59, 2011. DOI: 10.35386/ser.v12i0.271. Disponível em: http://sokedureview.org/index.php/SER/article/view/271. Acesso em: 18 dec. 2024.