Instructional explanations are sometimes viewed as part of a nonconstructivist, solely teacher-centered learning environment, leading to the perception that they are ineffective or inappropriate for teaching science. Consequently, teacher education programmes seldom focus on preparing teachers to explain scientific concepts effectively.…

Although research has highlighted the challenges of teaching in urban settings, particularly for science teachers, it has paid less attention to the development of science teaching identities in urban settings. This paper situates science teaching identity within societal discourses of science, education, and teaching to explore the ways in which…

We describe the development, design, implementation, and preliminary classroom results of an innovative curriculum, "Focus on Energy," that supports learning about energy in Grades 4-5. The curriculum is grounded in the concepts of science as practice, model-based reasoning, and learning progressions, and builds on students' pre-existing…

Although visual aids are widely considered a valuable source of scaffolding, the nature and active utilization of these aids in current science classrooms are not well understood. This qualitative study explores interaction in the teaching of concepts related to evolution, with a specific focus on a teacher's use of different visual support…

This exploratory qualitative study examined science teacher enactment of crosscutting concepts (CCCs), a core aspect of Next Generation Science Standards (NGSS) three-dimensional learning, which also includes disciplinary core ideas and science and engineering practices (SEPs). We collected naturalistic observational and interview data from 13…

Professional development (PD) can support science teachers to learn about instructional reforms, but more work needs to be done on broadening our understanding of how specific PD activities support teacher learning. One understudied PD activity is the "student hat": when teachers engage in student learning activities while considering…

As linguistic diversity continues to increase in the United States public school system, schools are expected to meet the needs of their ever-changing student body. While much attention within education research has understandably focused on multilingual learners' (MLs) English language acquisition, an emergent body of work points to science as an…

To promote a justice-oriented approach to science education, we formed a research-practice partnership between middle school science teachers, their students, curriculum designers, learning scientists, and experts in social justice to co-design and test an environmental justice unit for middle school instruction. We examine teacher perspectives on…

Across decades, science educators have invested in curricula that presume scientific unity. The phrases "habits of mind, scientific method, processes of science, inquiry skills, nature of science, practices of science" reflect this obsession. However, historians look with skepticism at universal notions of science and endorse…

This study addresses the measurement of high school students' epistemic knowledge associated with scientific experimentation (EKSE) which concerns "how" scientific experimentation generates knowledge and "why" that knowledge is justified. Based on philosophical, educational standards, and literature analyses, an EKSE construct…

Adopting new instructional materials is an important way to support reform in science education, but implementation can be challenging and complex. Therefore, we conducted a contrasting case study of two middle schools implementing new curricular materials. We conducted semi-structured interviews with teachers and leaders and collected…

Mechanistic reasoning is a powerful form of reasoning central to scientific explanations. Despite mechanistic reasoning being an important dimension of scientific practice and a central dimension of science curricula, students face difficulties in developing such type of reasoning. Many authors have been proposing tools for supporting its…

Important factors in learning science include motivational variables (relevance of science learning for personal goals, self-efficacy for learning science, and interest in a scientific career), emotional variables (boredom and enjoyment in science classes), and engagement variables (vigor, dedication, and absorption towards science studies). Data…

Science education researchers have highlighted how uncertainty can foster meaningful scientific sense-making, supporting students to re-evaluate their understandings of scientific phenomena and pursue deeper causal accounts. However, facilitating whole-class conversations motivated by uncertainty is complex and challenging, calling for further…

Out-of-field teaching is a global educational challenge. In particular, many teachers whose academic background and main teaching experience is in biology are called to teach middle school physics and have limited opportunities for productive professional development. Based on previous studies, we expect these teachers to hold different epistemic…