University of Isfahan Mathematics and Society 2345-6493 2 4 2018 02 20 Linear algebra in middle school textbooks Linear algebra in middle school textbooks 31 50 21977 10.22108/msci.2017.21977 FA Mansoure Sabour Ferdowsi University of Mashhad Mohammad Sal Moslehian Ferdowsi University of Mashhad Journal Article 2016 12 01 In this article, we examine the content of linear algebra in newly written middle school textbooks (seventh, eighth, and ninth grades) and, while highlighting the necessities, suggest some new linear algebra content for the ninth grade level. Additionally, we point out cases that confirm the appropriateness of this proposed content. In this article, we examine the content of linear algebra in newly written middle school textbooks (seventh, eighth, and ninth grades) and, while highlighting the necessities, suggest some new linear algebra content for the ninth grade level. Additionally, we point out cases that confirm the appropriateness of this proposed content. https://math-sci.ui.ac.ir/article_21977_633d5be082100b7bfdc2db61896ba3da.pdf