“Analysis of Mathematical Operations Content for Grades (4th, 5th, and 7th Grades) Books in Jordan According to the Standards of Mathematics NCTM (2000)”. Journal of Educational and Social Research 12, no. 2 (March 5, 2022): 206. Accessed November 24, 2024. https://www.richtmann.org/journal/index.php/jesr/article/view/12840.