Problem solving is considered an essential ability for becoming an expert in physics, and individualized feedback on the structure of problem-solving processes is a key component to support students in developing this ability. Problem-solving processes consist of multiple elements whose order forms the sequential structure of these processes.…

The work in this dissertation is presented in two parts. The first part (Chapters 3 and 4) details work relating to students' explanations of reaction mechanisms in organic chemistry. The second part (Chapters 5 and 6) details work relating to the evaluating the uptake of research-based instructional practices in introductory chemistry,…

[This paper is part of the Focused Collection on Qualitative Methods in PER: A Critical Examination.] Epistemic beliefs about physics are most often investigated using quantitative instruments that reflect binary conceptualizations of those beliefs. This study reports from a qualitative study which used continua to represent the epistemic beliefs…

Science and engineering practices (SEPs) and crosscutting concepts (CCs) constitute a significant part of "A Framework for K-12 Science Education" (NRC 2012). As teachers, the role of the authors is to highlight the pivotal role that both scientific knowledge and the practices used to generate knowledge play in learning. This article…

This study explores the role of unconventional forms of classroom assessments in expanding minoritized students' opportunities to learn (OTL) in high school physics classrooms. In this research + practice partnership project, high school physics teachers and researchers co-designed a unit about momentum to expand minoritized students' meaningful…

Research-based assessments (RBAs) measure how well a course achieves discipline-specific outcomes. Educators can use outcomes from RBAs to guide instructional choices and to request resources to implement and sustain instructional transformations. One challenge for using RBAs, however, is a lack of comparative data, particularly given the skew in…

Fostering methods that promote learners' conceptual understanding is crucial for better performance in science subjects. This study investigated how teachers of physical sciences perceive the utilization of Concept Cartoons as a formative evaluation tool. Ten Grade 11 teachers selected from secondary schools in the Nelson Mandela Bay district of…

As introductory physics courses increasingly focus on student engagement, the use of Learning Assistants (LAs) has increased. LAs and other instructors need to have sufficient PCK to effectively guide student learning. Our goal was to research LAs observed PCK in the classroom and to develop a set of questions to assess LAs' PCK. Our research…

We present an analysis of students' thinking skills as evidenced by free-response exam problems during the COVID-19 pandemic. We compare two inquiry-based, laboratory-based classical mechanics courses, one taught online and one taught in person during the pandemic, and two inquiry-based, laboratory-based electricity and magnetism courses, one…

Instructional videos are commonly used in both remote and in-campus curriculum. In order to investigate students' experience when learning with online instructional videos, we adapted a method called "UX curve" from the user experience studies in industrial design. In this paper, we introduce the procedure and data processing method of…

In response to the call for promoting three-dimensional science learning (NRC, 2012), researchers argue for developing assessment items that go beyond rote memorization tasks to ones that require deeper understanding and the use of reasoning that can improve science literacy. Such assessment items are usually performance-based constructed…

[This paper is part of the Focused Collection on Instructional labs: Improving traditions and new directions.] In recent years, physics instructional labs have been under considerable research and development. However, there seems to be no shared understanding of how the assessment of instructional labs should be arranged to best serve students'…

This case study examined teachers' on-the-fly formative assessment conversations, that is, how teachers collect information from students' thinking and use that information to support their learning during teacher-student interactions. Previous studies have typically analysed whole-class discussions on the level of speaking turns, and have…

Science education researchers typically face a trade-off between more quantitatively oriented confirmatory testing of hypotheses, or more qualitatively oriented exploration of novel hypotheses. More recently, open-ended, constructed response items were used to combine both approaches and advance assessment of complex science-related skills and…

Research fields related to learning (e.g., educational technology and learning sciences) have historically focused on what questions using traditional methods (e.g., comparing different learning tools and methods). New methodologies that are grounded in learning, engagement, and motivational theories are needed to additionally address the how…