Linear algebra is gaining increased attention due to its applications in many modern high-tech industries, such as artificial intelligence, machine learning, and robotics. Coordinate systems underlie many concepts in linear algebra and promote students' spatial thinking of key concepts by imposing a visual aspect to courses that may otherwise be…

Student veterans are often viewed in popular culture with a deficit mindset. They are "wounded warriors" who are navigating mental health challenges, academically underprepared, and non-traditional students balancing other responsibilities beyond college. Despite potential lingering effects of military service, student veterans bring…

In this dissertation I explore instructors' work with instructional tasks as they plan to introduce various representations of derivatives. Drawing on the notion of "framing" from sociology, I adopt a situative lens to study calculus instructors' planning of instructional tasks. I rely on Herbst and Chazan's (2012) notion of…

This study sought to explore whether access to definitions and general representations influences the construction of general direct arguments. Data was collected in college mathematics courses for prospective elementary school teachers. Participant arguments were analyzed along two variables: the generality of the representations and the…

Touted as the future of language teaching, task-based pedagogy is grounded in current Second Language Acquisition (SLA) theories, and is in line with the trend of learner-centeredness in general education. However, the method has yet to be fully embraced by the language teaching community due to the lack of 1) clear delineation of pedagogical…

New forms of visualizations are transforming how people interact with data. This dissertation explored how undergraduates learn with infographics. The following questions guided this research: (i) What do we know about the factors influencing the processing of data visualizations? (ii) How do task-level and learner-level characteristics impact the…

This study investigated how English language writers in a Chinese university were able to paraphrase following instruction with an online module. Participants were separated into two groups: Group A (Individuals) and Group B (Dyads). They were then trained and assessed in their ability to complete paraphrasing tasks with a pre and posttest.…

The aim of this dissertation was to develop and validate a novel Epistemic Competence Beliefs Measure (ECBM) in order to explore students' ability to evaluate the characteristics of scenarios about complex and controversial social issues. Epistemic competence was hypothesized to be critical in performing multiple source use (MSU) tasks and in the…

The present study explored perceptual and articulatory techniques addressing the pronunciation of Spanish rhotics by means of a week-long computerized training. Through a quasi-experimental design approach, the study tested the utility of the online training and its effects on the phonetic production of taps [voiced alveolar tap or flap] and…

Academic speech in the higher education community is an important form of communication and connection for scholars. Metacognition of academic speech for international multilingual graduate students is an understudied area. The purpose of the current study was to understand metacognition during academic speech for international multilingual…

In an increasingly complex world, it is imperative that undergraduate science courses prepare students to make confident, informed decisions and predictions. The research presented in this thesis focuses on supporting students to engage in mechanistic reasoning (MR) about phenomena in chemistry and biology (that is, thinking about how and why…

This dissertation consists of three projects that were designed to investigate collegiate instrumentalists' practice habits and motivation orientations. The first investigation was a review of the literature about instrumental practice strategies, motivation orientations, and social factors influencing music practice. The second investigation was…

The purpose of this study was to investigate to what extent bi-modal input improves the word segmentation ability of L2 learners of Japanese. Accurately identifying words in continuous speech is a fundamental process for comprehending the overall message, but studies show that second language (L2) learners often find this task difficult, even when…

Within the field of linguistics, whether considering language contact situations (Weinreich, 1979) or foreign language education (Lado, 1957), the topic of language transfer, especially as it relates to pronunciation, has always been an item of particular interest. While research on such transfer has mostly focused on various phenomena of the L1…

This dissertation explores Spanish copular verbs, "ser" and "estar" (both 'to be' in English), in pre-adjectival contexts within two Spanish varieties: first-language (L1) Chilean speakers from Santiago (N = 29) and second-language (L2) English-speaking learners studying in Chile (N = 31). Bridging sociolinguistics and second…