Matching Items (2)
Filtering by
- All Subjects: science education
Description
Blind and visually impaired individuals have historically demonstrated a low participation in the fields of science, engineering, mathematics, and technology (STEM). This low participation is reflected in both their education and career choices. Despite the establishment of the Americans with Disabilities Act (ADA) and the Individuals with Disabilities Education Act (IDEA), blind and visually impaired (BVI) students continue to academically fall below the level of their sighted peers in the areas of science and math. Although this deficit is created by many factors, this study focuses on the lack of adequate accessible image based materials. Traditional methods for creating accessible image materials for the vision impaired have included detailed verbal descriptions accompanying an image or conversion into a simplified tactile graphic. It is very common that no substitute materials will be provided to students within STEM courses because they are image rich disciplines and often include a large number images, diagrams and charts. Additionally, images that are translated into text or simplified into basic line drawings are frequently inadequate because they rely on the interpretations of resource personnel who do not have expertise in STEM. Within this study, a method to create a new type of tactile 3D image was developed using High Density Polyethylene (HDPE) and Computer Numeric Control (CNC) milling. These tactile image boards preserve high levels of detail when compared to the original print image. To determine the discernibility and effectiveness of tactile images, these customizable boards were tested in various
university classrooms as well as in participation studies which included BVI and sighted students. Results from these studies indicate that tactile images are discernable and were found to improve performance in lab exercises as much as 60% for those with visual impairment. Incorporating tactile HDPE 3D images into a classroom setting was shown to increase the interest, participation and performance of BVI students suggesting that this type of 3D tactile image should be incorporated into STEM classes to increase the participation of these students and improve the level of training they receive in science and math.
university classrooms as well as in participation studies which included BVI and sighted students. Results from these studies indicate that tactile images are discernable and were found to improve performance in lab exercises as much as 60% for those with visual impairment. Incorporating tactile HDPE 3D images into a classroom setting was shown to increase the interest, participation and performance of BVI students suggesting that this type of 3D tactile image should be incorporated into STEM classes to increase the participation of these students and improve the level of training they receive in science and math.
ContributorsGonzales, Ashleigh (Author) / Baluch, Debra P (Thesis advisor) / Maienschein, Jane (Committee member) / Ellison, Karin (Committee member) / Arizona State University (Publisher)
Created2015
Description
Clickers are a common part of many classrooms across universities. Despite the widespread use, education researchers disagree about how to best use these tools and about how they impact students. Prior work has shown possible differential impacts of clickers based on demographic indicators, such as age, gender, and ethnicity. To explore these topics a two-part project was designed. First, a literature review was completed focusing on past and current clicker practices and the research surrounding them. Second, original data, stratified by demographic characteristics, was collected on student perceptions of clickers. The literature review revealed that not all uses of clickers are created equal. Instructors in higher education first introduced clickers to enhance traditional pedagogies by simplifying common classroom tasks (e.g. grading, attendance, feedback collection). More recently, instructors pair clickers and novel pedagogies. A review of the identified benefits and drawbacks for students and instructors is provided for both approaches. Instructors can use different combinations of technological competency and pedagogical content knowledge that lead to four main outcomes. When instructors have both technological competency and pedagogical content knowledge, all the involved parties, students and instructors, benefit. When instructors have technological competency but lack pedagogical content knowledge, instructors are the main benefactors. When instructors have pedagogical content knowledge alone, students can benefit, but usefulness to the instructor decreases. When instructors have neither technological competency nor pedagogical content knowledge, no party benefits. Beyond these findings, recommendations are provided for future clicker research. Second, the review highlighted that clickers may have a differential impact on students of different demographic groups. To explore this dynamic, an original study on student views of clickers, which included demographic data, was conducted. The original study does not find significantly different enthusiasm for clickers by demographic group, unlike prior studies that explored some of these relationships. However, white students and male students are overrepresented in the group that does not enjoy clickers. This conclusion is supported by visual observations from the means of the demographic groups. Overall, based on the review of the literature and original research, if instructors pair clickers with validated pedagogies, and if researchers continue to study clicker classrooms, including which students like and benefit from clickers, clickers may continue to be a valuable educational technology.
ContributorsChambers, Elijah Lorenzo (Author) / Henderson, Joesph (Thesis advisor) / Ellison, Karin (Thesis advisor) / Chew, Matthew (Committee member) / Arizona State University (Publisher)
Created2020