The central focus of my dissertation concerns the issue of representation. The issue of representation is important for science education research for two reasons: (1) the use of external representation in science teaching and learning, particularly in chemistry education, is ubiquitous as microscopic entities are not directly visible, and (2) the…

The central focus of my dissertation concerns the issue of representation. The issue of representation is important for science education research for two reasons: (1) the use of external representation in science teaching and learning, particularly in chemistry education, is ubiquitous as microscopic entities are not directly visible, and (2) the…

Laboratory activities are a prevalent and essential part of chemistry learning because of their potential to help students develop problem solving abilities, visualize chemistry concepts learned in lecture, and gain practical skills. However, learning in the laboratory environment is not without its challenges. For example, cookbook-style…

The magnitude and scale of current threats to ecosystems requires interdisciplinary approaches to both science and training. For example, urbanization has resulted in increased runoff from communities into coastal habitats, necessitating work across the marine-terrestrial interface. This runoff holds myriad pollutants which can impact vulnerable…

Optimization is a component critical to method development. Mathematical modeling of physical phenomena enables an efficient search for the parameters and conditions that optimize methods and systems. Here, optimization of methods in sonoelectrochemistry, electrochemical separations, electrochemical education, and assessment of diabetic status are…

Reducing risk associated with college student drinking is a major public health concern. The free-pour assessment has the potential to inform interventions aimed at reducing risks associated with college student drinking. Yet, few studies have assessed conditions that influence pouring abilities, and no identified studies have assessed pouring…

Excessive drinking is commonplace among college students and can lead to numerous negative consequences. Alcohol expectancies are a well-studied correlate of alcohol consumption, and greater understanding of expectancies in relation to drinking behavior and alcohol-related consequences could inform future assessment and intervention. Past research…

The overarching goal of this dissertation is to examine institutional change initiatives in STEM and to understand the impact of engaging with a specific change strategy on a biochemistry educator's instructional practice. Institutional change initiatives involve executing an intentional strategy to influence teaching practices within a specific…

Freshmen and sophomores in college are historically at risk of disengaging with general and organic chemistry courses, performing poorly and not continuing in STEM. Utility value (UV) interventions, though, have increased the achievement and retention of low-performing students in psychology and introductory biology courses. In this study, a…

For centuries we have been using food for our well-being and health maintenance. As far back as Hippocrates (known as the father of medicine), food has been a center stone used as the good or suffering of humanity. The Bible references food and fasting, cleansing and revitalization to heal the spirit. Before the scientific discovery of synthetic…

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…

Course-based Undergraduate Research Experiences (CUREs) have been described in a range of educational contexts. Although various learning objectives, termed anticipated learning outcomes (ALOs) in this project, have been proposed, processes for identifying them may not be rigorous or well-documented, which can lead to inappropriate assessment and…

Research investigating faculty and instructors' perception of teaching in discipline-oriented fields such as biology, chemistry and physics suggest that faculty hold diverse conceptions about teaching and learning. This study extended this work to a discipline at the interface between traditional physical science and life science fields,…

Ubiquitin is essential for eukaryotic life and varies in only 3 amino acid positions between yeast and humans. However, recent deep sequencing studies indicate that ubiquitin is highly tolerant to single mutations. We hypothesized that this tolerance would be reduced by chemically induced physiologic perturbations. To test this hypothesis, a class…

In response to both nationwide calls for reform and a perception that the existing chemistry curriculum was not meeting the needs of life science students, faculty in the department of chemistry at Purdue created a redesigned chemistry course sequence specifically aimed at preparing biology majors. The new sequence, called the 1-2-1 curriculum,…