Redefining Learning Strategies: Investigating Alternatives to Upper Division Engineering Textbooks in Junior Aerodynamics Classes

Textbooks have traditionally served as the primary educational resources in classes for decades. However, with the transition to online learning prompted by the onset of the COVID-19 pandemic, there has been a significant shift towards online learning materials. As the pandemic subsides, students, particularly those in engineering disciplines, have persisted in utilizing these alternative resources, prompting questions about their effectiveness and identifying the most suitable options. This study aims to uncover the underlying reasons for the decline in textbook usage and to identify the most effective resources for student learning. The study involved approximately 170 students enrolled in a Low Speed Aerodynamics course at Arizona State University (ASU). These students were invited to participate in a series of surveys after we introduced new changes to the course such as recitations, holistic grading, and an online interactive textbook. Around 40 students voluntarily responded to the surveys. Additionally, interviews were conducted with four professors to gather insights into why students may not be using textbooks, and to gather their opinions on recitations, the Connect software, and holistic grading, if they have incorporated these into their own courses. The survey findings revealed that although traditional textbooks offer detailed explanations to aid in grasping concepts, students often prefer alternative resources such as supplementary materials, recitations, and office hours for applying their knowledge to homework or tests. Holistic grading then provides meaningful feedback on the concepts they need to revisit after attempting to apply their understanding during tests. From our survey, it is evident that reaching a definitive solution regarding textbook selection and identifying optimal resources remains challenging. Nevertheless, students expressed a preference for interactions among peers and with professors, indicating that changes incorporating these elements were more favorably received. Further exploration into the continued implementation of holistic grading and recitations could provide insights into the enduring impact of the findings from this study over time.