Women, especially Black and Latina women, are marginalized in physics, including in high school classrooms. Recognition is one of the ways women and girls experience marginalization in physics. This dissertation is comprised of three distinct but related studies examining how students experience recognition in an AP Physics 1 classroom. The first…

The Black student population underperforms all other demographic groups in high school science achievement. The purpose of this quantitative correlational research was to examine various factors influencing the science proficiency of Black students in selected Florida high schools. Florida's PK--20 Education Information Portal provided the…

This dissertation investigates how the numerical representation of women in small collaborative groups influences their learning in a college biology class for non-majors focused on sex, gender, and society. Prior to the start of the semester, the researchers divided students into all-male, all-female, or mixed-gender groups of varying sex ratios.…

Concept inventories are widely used in physics education research, yet numerous studies show that concept inventories measure dramatically different learning gains in different demographic groups. Prior studies show that the performance gaps between demographic groups are already present in their preinstruction responses, suggesting that the…

The purpose of the study is to see if there is a significant difference in chemistry exam achievement growth for 10th grade students in classes with problem-based learning compared with those students in classes with direct instruction. The state in which the study was conducted is developing new standards that are challenging students more than…

This dissertation investigates the voluntary usage of clickers to answer in class multiple-choice questions in general chemistry courses and its effect on student performance. The first study explored the demographic composition of two sequential introductory level chemistry courses over six terms. No difference in voluntary usage of the clicker…

Students' motivational beliefs about physics can influence their engagement and performance in physics as well as retention in their majors and careers. Students from underrepresented groups in physics such as women may not have enough encouragement and role models to help them develop strong motivational beliefs in physics. The societal…

Statement of Purpose and Method of Study: Oculus Rift immersive virtual reality includes a headset and a computer and immerses the user into a three-dimensional experience. Immersive virtual reality learning experiences with classroom discussions are emergent, novel instructional methods. This standard exploratory study investigated an…

This applied dissertation was designed to determine if there is a difference between students' gender, ethnicity, and age and their performance in General Chemistry I at a Christian University in Florida. Many scientific studies reveal the existence of a gender performance gap in chemistry: women mostly underperform men. Certain factors reported…

The current study aims to investigate whether the instructional approach (flipped or traditional) and gender (male or female) influence students' sense of autonomy, relatedness, and competence, or influence their achievements in high school chemistry. Merrill's First Principles of Instruction theory was used to design the flipped classroom (FC)…

This quantitative dissertation examined the differences between young men and women's perceptions of mathematics and science identity, self-efficacy, and utility. There are gender norms and stereotypes that impact identity, self-efficacy, and perceived utility of mathematics and science. The secondary data analyzed were drawn from the follow-up…

Student grades and motivational outcomes in introductory physics courses can influence their retention in science, technology, engineering, and math (STEM) disciplines and future career aspirations. In recent years, many research studies have focused on inequities in calculus-based introductory physics courses, e.g., by investigating gender…

My dissertation is a pre-mid-post-test, quantitative research design, including surveys and written assessments, to answer these research questions: 1. How do students' science mindset vary over time when engaged in science inquiry activities? Is there a difference between male and female students? 2. Is there a relationship between 7th grade…

Self-efficacy can determine how hard a student works, if they will persevere in the face of obstacles or succeed academically (Britner & Pajares, 2006). It has been suggested that practices in an inquiry-based science class can provide positive experiences needed to increase self-efficacy of middle school students (Britner & Pajares,…

Development and use of validated assessments in physics provide insight into student understanding of physics concepts and can be utilized to track student learning across time and instructional strategies. These tools can be used to gauge the efficacy of interventions designed to support students and persistence, and allow instructors to make…