Resonance is a fundamental chemistry concept first introduced to students in General Chemistry I, reintroduced in Organic Chemistry I, and then utilized throughout other higher-level chemistry courses. A molecule or ion can be said to exhibit resonance when it can be represented by two or more chemical structures (i.e., Lewis structures) that…

Molecular representations that show chemical bonding are ubiquitous in general and organic chemistry. These help in communicating chemistry concepts that are fundamental to understanding "how" and "why" molecules interact. The goal of this dissertation work is to offer an evidence-based report on the affordances and limitations…

Significant figures in a measurement are all the digits known plus one more digit that is uncertain or estimated. The problem addressed by this study is inconsistencies in the instruction of significant figures in high school chemistry. This study examined teacher experience as related to the teaching of significant figures. The individuals…

My thesis work is focused on conceptual and epistemic learning and characterizing the environments in which this learning takes place. Earlier studies conducted by the Stowe group explored how instructional practices, instructional emphasis, and assessment emphasis relate to student outcomes in general and organic chemistry courses. Student…

Data are an essential factor in the fourth industrial revolution, demanding engineers and scientists to leverage and analyze their potential for significantly improving the efficiency of industrial processes and their control systems. In classical industrial process control systems, the models are constructed using linear data-driven approaches,…

Though job opportunities in science, technology, engineering, and math (STEM) continue to expand in the United States, people on Individualized Education Programs (IEPs) while in school are continually disadvantaged in future STEM-based career possibilities. Studies have shown that students on IEPs are far less likely to major in a STEM degree…

This thesis identifies and explains the gaps in prior and current applications of representational competence construct in chemistry. Representational competence (RC) describes a set of skills that chemistry researchers Kozma and Russell observed experts demonstrate when engaging with disciplinary representations (Kozma & Russell, 1997; Kozma…

Chemistry is a difficult subject for many students. The content is challenging, and students often enter chemistry classes with preconceived ideas about chemical phenomena which may or may not align with scientific ideas (Gabel, 1999; Johnstone, 1991, 1993; Nakhleh, 1992). The purpose of this study was to understand high school students'…

This dissertation discusses the gestures produced by students as they learn about the inorganic chemistry topic of symmetry and group theory. Also included is an overview of the development and implementation of a symmetry and group theory laboratory activity, as well as an investigation seeking to promote gestural mimicry and uncover design…

To make sense of our interconnected and algorithm driven world, students increasingly need proficiency with computational thinking (CT), systems thinking (ST), and computational modeling. One aspect of computational modeling that can support students with CT, ST, and modeling is testing and debugging. Testing and debugging enables students to…

As the number of STEM opportunities and the need for a scientifically literate society increases, educators in STEM fields require tools that help support these needs. Chemistry is one STEM content area that would benefit from exploring educational technology that supports conceptual understanding. An action research study was conducted to…

This study examines the impact of hands-on chemistry laboratories in shaping secondary students' chemistry self-concepts. Utilizing a mixed methods approach, the research sought to address how students' chemistry self-concept varied during the first semester of an introductory chemistry course and give voice to students' understanding of the role…

This dissertation is in two parts: Part 1 of the study focuses on investigating the feasibility of delivering turn-on rhodamine-based fluorophores through Glucose transporters (GLUTs) for biomedical applications, both "in vitro" and in vivo. Fluorescent GLUT targeting probes are essential for analyzing transport activity, monitoring…

The dissertation is composed of two sections. The first section is composed of chapters one, two, and three and describes the study of macrocyclic [beta]-hairpin peptides derived from [beta]-sheet peptides. The second section is composed of chapters four and five and discusses the curricular innovations made to support the remote instruction of an…

Chemistry graduate teaching assistants (GTAs) play a unique but important role in undergraduate STEM education. As leaders of laboratory and discussion sections, GTAs teach fundamental experimental techniques and reinforce course content in classrooms and have more opportunities to interact with students one-on-one or in small groups. GTAs often…