The Impact of Strategy 3-2-1 in acquiring Concepts of Sociology of fourth grade students: The Impact of Strategy 3-2-1 in acquiring Concepts of Sociology of fourth grade students. jperc. 2019;16(62):176-194. Accessed June 24, 2025. https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/917