This study investigates the representations and understandings of electric fields expressed by Chinese high school students 15 to 16 years old who have not received high school level physics instruction. The physics education research literature has reported students' conceptions of electric fields post-instruction as indicated by students'…

Public concern about adolescent sexuality has garnered considerable interest in recent decades. Most teenagers are either thinking about or acting on their sexual impulses. Yet notable controversy exists regarding sexual education among youth. Adolescents report sexuality education must speak to issues of interest to them and be delivered in a…

Analyzing problem-behavior trajectories can be difficult. The data are generally categorical and often quite skewed, violating distributional assumptions of standard normal-theory statistical models. In this article, the authors present several currently available modeling options, all of which make appropriate distributional assumptions for the…

This study investigated teacher educators', prospective teachers', and K-12 teachers' opinions about the effectiveness of ICT related courses and the ways to improve the courses in Turkey's pre-service teacher education programs. The researchers used both quantitative and qualitative research approaches within the data collection and analysis…