Effective science instruction in a blended learning approach is synonymous with the strategic use of instructional videos (IVs) to fill the gap in teacher support. This study aims to determine the IVs' effectiveness in improving students' concept retention and overall learning experiences. The experimental group was exposed to instruction…

How do teachers elicit and sustain students' interest and engagement in science lessons? This paper answers this question in the context of Bhutan, where students' performance in science is low compared to other subjects, and where falling levels of interest in science are a concern. Like other countries in the Global South, a large proportion of…

As an important resource in online learning, video lectures have attracted considerable research attention in the impact of teachers' nonverbal guidance behaviors on learning. However, few studies have focused on secondary education, and it remains unclear whether the interaction between different guidance frequencies and types leads to variations…