SUPHI ÖNDER BÜTÜNER. The Learning Opportunities Presented by Mathematics Coursebooks Used in Middle Schools in Turkey on the Concept of Arithmetic Mean. Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 11, n. 1, p. 157–187, 2020. Disponível em: https://turcomat.org/index.php/turkbilmat/article/view/228. Acesso em: 2 may. 2024.