In science education, inquiry-based approaches to teaching and learning provide a framework for students to building critical-thinking and problem-solving skills. Teacher professional development has been an ongoing focus for promoting such educational reforms. However, despite a strong consensus regarding best practices for professional…

An overview of research studies on the relationship among time factors and student achievement is presented. The California Beginning Teacher Evaluation Study is cited as a seminal work in this area. A brief summary of findings on allocated time, engaged time, and academic learning time includes a discussion on how these studies have been expanded…