Textbooks can have a fundamental and positive effect on both learning and teaching. As such, in order to understand how students structure concepts in their minds, it is necessary to analyze the structure in which those concepts presented in textbooks are described. This study examined a network of concepts used in the domain of biotechnology in…

This study aimed at uncovering complexities surrounding in-service English as a foreign language (EFL) teachers' identity development. Literature still lacks knowledge about such process in the face of workplace conflicts and as to whether such conflicts vacillate EFL teachers' imagined and practiced identities, especially in the context of Iran.…

This explanatory mixed-methods study investigated the use of bilingual students' linguistic repertoire for teaching and clarifying grammar. A repeated-measures design was used in which the quantitative data were complemented with follow-up qualitative data. Data were collected in six treatment sessions and from twenty-five all-male twelfth-grade…

Students who are abused in various ways are at a higher risk for psychological problems such as depression and suicidal ideation. Accordingly, this study aimed to investigate the mediating role of psychological problems and perceived social support in the relationship between cyber victimization and suicidal behavior. The participants in this…

Principals (policy makers) have debated the progress in U.S. student performance for a half century or more. Informing these conversations, survey agents have administered seven million psychometrically linked tests in math and reading in 160 waves to national probability samples of selected cohorts born between 1954 and 2007. This study is the…