The purpose of this action research study was to explore the impact of problem-based learning on science instruction in my eighth-grade college preparatory classroom. Constructivism was the framework for this study. Problem-based learning is based on constructivist principles, and it served as the instructional model for this study. PBL can foster…

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…

The work presented in the following chapters was undertaken with the goal of understanding and improving education in organic chemistry. Initial work, described in Chapters 1 and 2, focuses on students' ability to explain and rationalize the outcomes of organic chemistry reactions. Chapter 1 explores the relationship between assessment emphasis…

This study investigated evidence of how students' mental models of fundamental kinematic relations evolved (i.e., developed cognitively over time) as observed during an introductory course in calculus-based classical mechanics. The core of the curriculum is based on a claim known as Galileo's principle of relativity. The course material comprised…

This dissertation investigates the complexities associated with developing expertise in physics problem-solving and the methods for measuring and assessing the skills involved. Problem-solving skills are critical in today's rapidly changing world, and thus, it is important to emphasize them in education. However, lacking precise methods for…

When instructing very large groups of students in science, it can be difficult to engage all students in the content and measure their understanding. A major unaddressed challenge in science instruction is how specifically to design and implement strategies that engender active learning particularly in high-enrollment undergraduate courses. Active…

In the collectivistic Thai society, oppressions are considered societal taboos that teachers rarely talk about in schools despite many oppressive events that happened in the past few decades (e.g., the 1976 student massacre and other political unrests). Science education in Thailand heavily emphasizes technical knowledge and rote memorization --…

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…

Literature in science education positions questions as the launching point for scientific inquiry, and widely used standards, such as the Next Generation Science Standards often state: "Science begins with a question" (NGSS Lead States, 2013). Questions have generally been studied for their role in sparking student inquiry or helping…

As global challenges increasingly require an interdisciplinary approach, this study highlights the urgency of taking stock of the forces that guide how teachers navigate complicated concepts in their classrooms such as climate change. This study takes up science education more specifically and emphasizes that not only is it important that students…

As schools continue to focus on outcome-based instructional practices, less emphasis is placed on the creativity and reasoning necessary for students to become effective critical thinkers. As a result, students struggle to demonstrate creative problem-solving skills in the classroom. This study examines how the facilitation of an instructional…

This study explores the challenges that elementary science educators face when teaching science in a time of crisis, as well as how to best provide elementary teachers with ongoing support for their science teaching during the novel COVID-19 pandemic. Using a phenomenological approach, this research focuses on elementary science teachers,…

This study examined secondary science teachers' conceptions of democratic citizenship and their beliefs about how citizenship relates to science education. These beliefs and conceptions were studied through a framework comprised of theories of belief, citizenship education, and civic engagement with science. Data were collected from 10 teachers…

Productive problem solving, concept construction, and sense making occur through the core process of abstraction. Although the capacity for domain-general abstraction is developed at a young age, the role of abstraction in increasingly complex and disciplinary environments, such as those encountered in undergraduate STEM education, is not well…

Ninth-grade students with learning difficulties typically underperform those without learning difficulties, particularly in an integrated geoscience course. Despite the growing demand for STEM careers, science remains challenging to understand and inaccessible to many, especially those with learning difficulties (Vavougios et al., 2016).…