The five chapters of this dissertation are anchored around the theme of supporting teachers in making inclusive instructional decisions in science to facilitate active student participation and engagement in science learning for students with complex support needs (CSN). Chapter 1 describes the benefits of inclusive education for students with…

Science museums conduct presentations for their audiences to attract and educate visitors, yet research on presentations has primarily concentrated on whether individual presentations were effective. This mixed-methods, quasi-experimental study looks at how the presenter's mental and physical engagements within a presentation affects audience…

This dissertation consists of three studies exploring factors affecting whether, when and how students engage in sense making in science disciplines, and the epistemological components of instruction that impact their engagement. Each study is grounded in science education reform efforts, including the Next Generation Science Standards (NGSS),…

As educators, our goal is to help our students be successful, but in order to accomplish this, we need to understand what factors contribute to student success. One factor, small-group active learning, has been correlated to improved academic outcomes; however, the magnitude of this improvement can vary across different courses, different types of…

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…

Effectively mastering organic chemistry means having the ability to recognize structural patterns, identify properties or behaviors as a result of patterns, manipulate and transform representations, and predict future outcomes. Often students rely on rote memorization of seemingly disconnected information instead of developing a sound…

This dissertation describes a practitioner's design-based development of a prototype chatbot to guide students in learning biological concepts of genetic mutations and protein synthesis. This chatbot's architecture provides learning activities, feedback, and support throughout a series of short, connected lessons. The chatbot is designed to…

This study explored the science learning experiences of elementary English Language Learners (ELLs) in a fourth-grade mainstream science classroom in an urban setting. Informed by ethnographic research and case study design, this study interrogated the celebrated and marginalized practices within common classroom procedures and what…

The purpose of this study was to examine how small groups of students in an introductory undergraduate chemistry course construct CERs and the influence of race, gender, and perceived status during this construction. The small groups of students engaged in three chemistry activities that required them to generate a claim, evidence, and reasoning…

Reading and writing are central to the conception of science and the work of scientists. While recent scholarship on science literacy suggests the benefits of integrating reading and writing in science teaching, less is known about the extent to which science teachers implement such integration. This naturalistic study examines two sixth-grade…

This study used a design research framework to teach secondary high school science students about environmental sustainability. A high school teacher and researcher collaborated to design a two week environmental science unit to help students make sense of complex environmental sustainability issues. This dissertation study sought to answer the…

With the continued emphasis in the United States on science teaching reform as a way to increase science learning and the scientific literacy of all, the integration of informal science learning activities like citizen science is emerging as a possible way to enhance formal science teaching and learning. There is a limited but growing number of…

This dissertation conducted a science classroom intervention using two instructional approaches, computational modeling and paper-based pictorial modeling, in the context of food webs. A series of research papers were written on the impact of the intervention on students' attitudes and learning, and on teachers via professional development and…

The primary focus of this education leadership portfolio is to reconstruct lessons on chemical reaction concepts for teachers to use and reach all learners of chemistry in Cecil County Public Schools. As a high school chemistry teacher, I have observed that student enrollment in chemistry is relatively low, and students show little enthusiasm…

This study explored the use of a dichotomous key as a scaffolding tool in the museum setting. The dichotomous key was designed as a scaffolding tool to help students make more detailed observations as they identified various species of birds on display. The dichotomous key was delivered to groups of fifth and seventh graders in two ways: on a…