Scientists and science educators have argued that learners (students, preservice teachers, and inservice teachers) should understand knowledge construction in science, in addition to figuring out disciplinary core ideas. Given this goal, some science education scholars created a construct called the "Nature of Science" (NOS), which aims…

A systematic literature review across multiple scientific disciplines was conducted to explore students' understanding of atomic structure, focusing on students' ACs. A total of 112 publications between 1972 and 2023 were selected for the study. Within the selected body of literature, 851 instances of ACs were distributed across students ranging…

It has been widely accepted in the science education research community that scientific literacy as a concept and phrase was introduced by Paul deHart Hurd in 1958. Recent research into the origins of the phrase, however, has shown this to be incorrect. Its first published use can be traced back, in fact, to 1945, and the phrase was frequently…

The purpose of this case study, informed by a Lakatosian perspective, is to identify how an alternative conception that originates in present learning but is related directly to subsequent learning contexts can be constructed. Before the study, one of the authors found by accident that a student who had learned about Avogadro's principle and…

Current science education reform efforts have identified sensemaking as an important goal of science education, and science education researchers have studied what constitutes the sensemaking process in the science classroom. Because the studies of sensemaking are loosely linked to those of scientific reasoning, however, they have provided little…

Issues regarding scientific explanation have been of interest to philosophers from Pre-Socratic times. The notion of scientific explanation is of interest not only to philosophers, but also to science educators as is clearly evident in the emphasis given to K-12 students' construction of explanations in current national science education reform…

Representational competence is a target of novel learning environments given the assumption that improved representational competence improves learning in science. There exists little evidence, however, that improving representational competence is positively correlated with learning outcomes across science disciplines. In this report, we argue…

Multiple external representations (MERs) are useful for teaching complex content in science education. An open question is whether there is an especially effective way to sequence MERs. On the one hand, the so-called concreteness fading approach suggests starting instruction with more concrete representations and proceeding stepwise to more…

Biology education research has shown that deeply rooted intuitions can influence students' understanding of biological phenomena. One example is design teleology, the intuition that organisms' traits were designed to fulfill a goal. Another example is psychological essentialism, the intuition that organisms have fixed essences. Past research has…

This research explored kindergarten students' learning of simple particle models to explain the properties and behavior of matter in the solid, liquid, and gas states and during phase transitions (evaporation, melting, freezing, and condensation). Science instruction for young learners tends to focus on the concrete and directly observable. This…

In recent years, there has been a strong push to transform STEM education at K-12 and collegiate levels to help students learn to think like scientists. One aspect of this transformation involves redesigning instruction and curricula around fundamental scientific ideas that serve as conceptual scaffolds students can use to build cohesive knowledge…

Chemical bonding is central to explaining many phenomena. Research in chemical education and the Framework for K-12 Science Education (the "Framework") argue for new approaches to learning chemical bonding grounded in (1) using ideas of the balance of electric forces and energy minimization to explain bond formation, (2) using learning…

Knowledge of science content and the ability to translate knowledge into effective teaching is known as teachers' "content knowledge for teaching" (CKT). Teachers with developed CKT are able to more effectively determine instructional and assessment activities that will deepen K-12 students' scientific literacy. However, preservice…

The interrelationship of science and engineering and the recent inclusion of engineering in K-12 science standards have promoted the incorporation of engineering design in science classrooms. However, empirical studies on the impacts of engineering design on science learning show mixed findings and indicate that factors such as the complexity of…

Assessing scientific modeling competence (SMC) is challenging because of the multi-dimensionality of the construct and the potential variability of student performance across tasks. To deal with the challenges, this study applied Kane's validity framework to assess high-school students' SMC in Newtonian mechanics and examined how students'…