In the information and technology era, instructional video technologies have become popular teaching approaches and attracted academic interest. A growing body of literature has investigated various instructional video technologies and identified influencing factors on their effectiveness. However, the findings on the effectiveness of…

More and more teachers create video explanations for their instruction. Whether or not they are effective for learning depends on the videos' instructional quality. Reliable measures to assess the quality of video explanations, however, are still rare, especially for videos created by (preservice) teachers. We developed such a measure in a…

The advance of video technology in education has been accelerated due to the wide use of portable devices, the increase in the number of Internet users and massive online open courses. Online-learning videos, due to their various positive effects, are becoming increasingly acceptable for both successful students and teachers. In addition to…

Over the past decades, researchers have investigated the effects of multimedia design principles to enhance learning. These evidence-based principles are known to enable students to learn from multimedia resources and support cognitive processing. However, it is unclear if and which of these multimedia design principles are implemented in…

Mobile technologies open up new ways of fostering reflection in teacher education. With the intention of tying reflection closer to the actions in the classroom, facilitating multimedia recordings, providing prompts for reflection and fostering discussions between pre-service teachers, experienced teachers and university mentors, we developed the…

Student teachers are most often provided opportunities for observing, then engaging directly in teaching during the student-teaching phase of their program. The ability to "notice" nuanced communication techniques, and identify interrelated methods and simultaneous skills occurring during teaching coincides with the development of the…

In the field of mathematic problem-solving, students are often assigned well-structured problems that have specific "right" answers. However, this misses an important aspect of education, which is to allow the learner to investigate the problem-space of authentic problems. To date, various technology scaffolds have been researched to…