In this study, the middle school mathematics teachers' knowledge of division of fractions was investigated through the strategies that they proposed and the problems that they posed for division of fractions. The data was collected from 22 middle school mathematics teachers through the task and semi-structured interviews. The data of this case…

China boasts one of the largest adolescent populations in the world, with 165 million in total (United Nations, 2017). In recent decades, Chinese adolescents have reached sexual maturity at increasingly early ages, and more and more young people in China are open to premarital sex while at the same time they general lack sexual and reproductive…

This paper aimed to identifying the professional efficiencies for the intermediate schools mathematics teachers and tries to know at what level the math teachers experience those competencies. The researcher used a descriptive research approach, the study data collected from specialist educators and teacher's experts and previous studies to…

This paper reports on a study conducted on the National Assessment of Educational Progress (NAEP) 2005 database. The purpose of the study was to examine predictors of student achievement using middle school mathematics teacher professional development items as criterion variables, such as the number of mathematics courses taken, the number of…