Examining Two Middle School Mathematics Teachers’ Knowledge for Teaching Manipulation of Algebraic Expressions during Lesson Planning and Instruction. Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 10, n. 3, p. 588–616, 2019. Disponível em: https://turcomat.org/index.php/turkbilmat/article/view/215. Acesso em: 28 may. 2026.