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- Genre: Doctoral Dissertation
Description
In 1997, developmental biologist Michael Richardson compared his research team's embryo photographs to Ernst Haeckel's 1874 embryo drawings and called Haeckel's work noncredible.Science soon published <“>Haeckel's Embryos: Fraud Rediscovered,<”> and Richardson's comments further reinvigorated criticism of Haeckel by others with articles in The American Biology Teacher, <“>Haeckel's Embryos and Evolution: Setting the Record Straight <”> and the New York Times, <“>Biology Text Illustrations more Fiction than Fact.<”> Meanwhile, others emphatically stated that the goal of comparative embryology was not to resurrect Haeckel's work. At the center of the controversy was Haeckel's no-longer-accepted idea of recapitulation. Haeckel believed that the development of an embryo revealed the adult stages of the organism's ancestors. Haeckel represented this idea with drawings of vertebrate embryos at similar developmental stages. This is Haeckel's embryo grid, the most common of all illustrations in biology textbooks. Yet, Haeckel's embryo grids are much more complex than any textbook explanation. I examined 240 high school biology textbooks, from 1907 to 2010, for embryo grids. I coded and categorized the grids according to accompanying discussion of (a) embryonic similarities (b) recapitulation, (c) common ancestors, and (d) evolution. The textbooks show changing narratives. Embryo grids gained prominence in the 1940s, and the trend continued until criticisms of Haeckel reemerged in the late 1990s, resulting in (a) grids with fewer organisms and developmental stages or (b) no grid at all. Discussion about embryos and evolution dropped significantly.
ContributorsWellner, Karen L (Author) / Maienschein, Jane (Thesis advisor) / Ellison, Karin D. (Committee member) / Creath, Richard (Committee member) / Robert, Jason S. (Committee member) / Laubichler, Manfred D. (Committee member) / Arizona State University (Publisher)
Created2014
Description
Past experiences influence how teachers identify as teachers, writers, and teachers of writing and impacts what they do in their classrooms, including their motivation and effectiveness in teaching writing. When teachers fail to identify as writers, they tend to spend less time teaching writing and may find it difficult to model a genuine passion and love for writing. Because of this, it is important to address the writing identities of preservice teachers before they enter their own classrooms. The purpose of this mixed methods study was to investigate and address preservice teachers' identities as teachers, writers, and teachers of writing using an adaptation of a visual literacy strategy known as full circling. Quantitative data were collected through a pre- and post Teacher/Writer Identity Survey and qualitative data were collected through classroom discourse transcripts, student reflective journals, field notes, and the researcher's reflective journal. Data analysis included a t-test comparison of pre- and post survey results and open and axial coding of qualitative data to establish major themes from emerging codes. The following conclusions were derived from the data: a) past experiences in writing affected the writing identities of the preservice teachers in the study; b) the full circling process provided a means for the preservice teachers to build knowledge on the traits and skills of effective teachers, writers, and teachers of writing; and, c) through full circling the preservice teachers demonstrated shifts in their identities as teachers, writers, and teachers of writing. Findings provided evidence that using a full circling strategy assisted preservice teachers in uncovering their identities as teachers, writers, and teachers of writing.
ContributorsHodgins, Ann (Author) / Zambo, Debby (Thesis advisor) / Hansen, Cory (Committee member) / Galligan, Gayle (Committee member) / Arizona State University (Publisher)
Created2014
Description
The availability and subsequent expansion in the use of online learning environments has provided a new avenue for teacher professional development: blended learning. While blended learning environments may provide attractive benefits to teachers and school administration, the impact of blended teacher professional development has been largely unexamined in the existing research. This mixed-methods study investigated professional development outcomes for 64 teachers participating in district sponsored teaching professional development, 32 in a blended course and 32 in a face-to-face equivalent of the course. Outcomes of the professional development were measured using pre- and post- instructional belief surveys, participant satisfaction surveys, and interviews measuring retention of instructional beliefs and application of new instructional strategies. Additionally, participants who did not complete the course were interviewed to learn about their experience in the course and reasons for non-completion. The results of this study show similar changes in instructional beliefs for both the blended and face-to-face sections and significantly higher satisfaction with course content, materials, and instructor involvement among blended participants. However, blended participants were less likely to be transitioning to, or practicing new strategies as measured by interviews 12 weeks following course completion. A large number of blended participants showed evidence of their knowledge of new instructional strategies, but were reluctant to apply new strategies in their classrooms. Non-completers primarily cited lack of time for their withdrawal, but expressed an interest in future blended learning courses. The recommendations from this study should inform districts, schools, and teachers about blended learning for teacher professional development.
ContributorsLeake, Stephanie (Author) / Garcia, David (Thesis advisor) / Archambault, Leanna (Committee member) / Cruz, Heather (Committee member) / Arizona State University (Publisher)
Created2014
Description
Teacher learning is a complex and important idea, given the proposed centralized role these individuals have in eradicating the inequitable school outcomes for students of color. It is necessary that researchers document the complex trajectory of learning that occurs as teachers engage in critical reflection on their practice. In the current study, white, female teachers examined the ways their own beliefs, assumptions, and values impacted classroom interactions with students of color, as well as the ways power, privilege, and whiteness manifested in the classroom. Utilizing Cultural Historical Activity Theory (CHAT) as a framework for understanding teacher learning as product and process, as well as whiteness and feminist theories as interrogative tools, the complex and iterative learning trajectories of two elementary school teachers are described in detail. The participating teachers engaged in critical reflection in the context of collaborative interviews, in which they reflected upon excerpts from classroom videos using the lenses of whiteness, power, and privilege in order to consider their own and others' teaching related to deeply held beliefs, assumptions, and values.
ContributorsMruczek, Cynthia (Author) / Swadener, Beth B. (Thesis advisor) / Kozleski, Elizabeth B. (Thesis advisor) / Scott, Kimberly A. (Committee member) / Arizona State University (Publisher)
Created2014
Description
With the unveiling of the National Educational Technology Plan 2010, both preservice and inservice K12 teachers in the United States are expected to create a classroom environment that fosters the creation of digital citizens. However, it is unclear whether or not teacher education programs build this direct instruction, or any other method of introducing students to the National Education Technology Standards (NETS), "a standard of excellence and best practices in learning, teaching and leading with technology in education," into their curriculum (International Society for Technology in Education, 2012). As with most teaching skills, the NETS and standards-based technology integration must be learned through exposure during the teacher preparation curriculum, either through modeling, direct instruction or assignments constructed to encourage standards-based technology integration. This study attempted to determine the extent to which preservice teachers at Arizona State University (ASU) enrolled in the Mary Lou Fulton Teachers College (MLFTC) can recognize the National Education Technology Standards (NETS) published by the International Society for Technology in Education (ISTE) and to what extent preservice teachers are exposed to technology integration in accordance with the NETS-T standards in their preparation curriculum in order to answer the questions of whether or not teacher education curriculum provides students an opportunity to learn and apply the NETS-T and if preservice teachers in core teacher preparation program courses that include objectives that integrate technology are more likely to be able to identify NETS-T standards than those in courses that do not include these elements In order to answer these questions, a mixed-method design study was utilized to gather data from an electronic survey, one-on-one interviews with students, faculty, and administrators, and document analysis of core course objectives and curriculum goals in the teacher certification program at ASU. The data was analyzed in order to determine the relationship between the preservice teachers, the NETS-T standards, and the role technology plays in the curriculum of the teacher preparation program. Results of the analysis indicate that preservice teachers have a minimum NETS-T awareness at the Literacy level, indicating that they can use technology skills when prompted and explore technology independently.
ContributorsLewis, Carrie L (Author) / Nelson, Brian (Thesis advisor) / Archambault, Leanna (Thesis advisor) / Savenye, Wilhelmenia (Committee member) / Atkinson, Robert (Committee member) / Arizona State University (Publisher)
Created2013
Description
ABSTRACT Counselors at a public community college who teach a first-year college success course to developmental education students do not have effective opportunities or a systematic method to develop their teaching practice. Moreover, like a majority of community college and university instructors, many counselors do not have formal training in instruction. Since the retention and persistence rates of developmental education students are low when compared to non-developmental education students, and the purpose of the college success course is to increase developmental education student success, it is imperative that instructors of the college success course are well-trained to provide high quality learning experiences. The researcher implemented the Lesson Study (LS) professional learning experience in order to increase the collaboration amongst counselors in their efforts to improve their teaching practice as well as improve the quality of the learning experience for developmental education students, consequently potentially improving their retention and persistence. The researcher facilitated a mixed-method study to explore how instructors made meaning of their teaching practice as well as what changes they made to their instructional practice while engaging in LS. The researcher utilized qualitative means to analyze the following data: (1) instructors' weekly reflective journals, (2) semi-structured interviews with instructors after each cycle of LS, (3) video recordings of LS debrief meetings, and (4) video recordings of LS planning meetings. The researcher utilized quantitative means to analyze the following data: (1) pre/post instructor surveys on self-efficacy, and (2) 1,235 student questionnaires regarding LS lessons and non-LS lessons. Analysis of the qualitative data demonstrated that how counselors made meaning of their LS experience seemed to correlate with positive features attributed to the practice of LS in the research literature such as increased collaboration and in-depth reflection as well as positive changes in instructional practices and an increased focus on learning from practice. In addition, analysis of the qualitative and quantitative data showed that lessons created through LS produced a higher quality learning experience for students than lessons that were not created through LS. Moreover, the analysis of the data showed an increase in instructors' efficacy for teaching.
ContributorsLucas, Miguel (Author) / Carlson, David L. (Thesis advisor) / Barnard, Wendy (Committee member) / Haas, Eric (Committee member) / Arizona State University (Publisher)
Created2014
Description
Undergraduate teacher preparation programs face scrutiny regarding pre-service teachers' preparation upon graduation. Specifically, scholars contend that teacher preparation programs do not adequately prepare pre-service teachers to plan for effective instruction. Situated in the Mary Lou Fulton Teachers College at Arizona State University, this action research study used the Theory of Pedagogical Content Knowledge to examine (a) how pre-service teachers developed unit planning practices using the Backward Design framework and (b) the pedagogical teaching practices used as they implemented the unit plan in the classroom. During the student teaching course, pre-service teachers received instruction on how to use the Backward Design framework to plan a unit of instruction to implement in their placement classroom. Results from the mixed-methods study provided evidence that Backward Design was an effective way for pre-service teachers to plan instruction. Results from the study indicated that implementing and reflecting on lessons taught from the unit plan contributed to the pedagogical teaching practices used in the classroom. Furthermore, results demonstrated that designing, implementing, and reflecting on the unit plan contributed to a shift in how participants viewed themselves. Through the study, they began to view themselves more as a teacher, than a pre-service student teacher. Keywords: teacher preparation programs, unit planning, instructional practices
ContributorsBoozer, April (Author) / Carlson, David (Thesis advisor) / Barnard, Wendy (Committee member) / Holmes, Shaun (Committee member) / Arizona State University (Publisher)
Created2014
Description
Mentor teachers have a significant impact on pre-service teachers. Unfortunately, mentors are often underprepared for their role, and thus, the potential learning from a student teaching experience is not maximized. Mary Lou Fulton Teachers College at Arizona State University provides training to mentors who host pre-service teachers during their student teaching experience. Training is delivered in two formats: online prior to the start of the semester and face-to-face each month throughout the semester. This action research study looked at how training contributes to mentor understanding and actions in supporting teacher candidates and how mentor support impacts teacher candidate performance. The study included two mentor/teacher candidate dyads and one university site coordinator. Qualitative and quantitative data were collected from a variety of sources including observations of mentor trainings, teacher candidate lessons, and coaching conversations. Additional data sources included semi-structured interviews with mentors, teacher candidates, and the site coordinator. Analysis of data found that training may contribute to mentor understanding, but other factors matter too. The data also indicated that current training is insufficient at producing all desired mentor behaviors. With respect to the ways that mentors support teacher candidates, this study found that mentors play a multifaceted role, provide ongoing feedback, and employ various strategies during coaching conversations. This study found mentors help teacher candidates see their performance through the eyes of an experienced educator. Modeling and coaching helped teacher candidates improve. This study also suggests a positive, professional relationship between mentor/mentee and certain teacher candidate characteristics such as openness to feedback facilitate learning from a mentor.
ContributorsBorden, Ryen (Author) / Carlson, David (Thesis advisor) / Barnard, Wendy (Committee member) / Rojas, Michelle (Committee member) / Arizona State University (Publisher)
Created2014
Description
An intervention study was conducted with elementary physical education teachers and their use of a newly developed series of fitness segments called Knowledge in Action (KIA). This study was designed to enable teachers to teach healthy behavior knowledge (HBK) in their classes without sacrificing physical activity levels. This study has two phases. First, the intervention was conducted to determine the effectiveness of the KIA fitness segment intervention. Second, teachers' perceptions of both teaching HBK and the KIA fitness segments were investigated. Ten teacher participants were randomly assigned to the intervention or control group. Intervention teachers participated in professional development, provided with all teaching materials, and YouTube videos that modeled the teaching of the KIA fitness segments. Teacher fidelity was measured through observations. Student physical activity patterns were measured in randomly selected teachers' classes (both intervention and control) to determine potential physical activity pattern differences between groups. Teachers were interviewed from one to three times across the project in order to determine perceptions of teaching HBK and the KIA fitness segments. Researchers used constant comparison method to uncover possible common themes. Student knowledge was assessed pre/post using PE Metrics Standard 3 cognitive test to determine HBK changes. Data analysis included General liner models (GLM) at the student level (gender) and Hierarchical linear models (HLM) at the school level (treatment, school). There was a moderate mean teacher fidelity score (77.9%) found among the intervention teachers. HLM results showed students in the intervention group had a 3.4(20%) greater improvement in HBK scores when compared with their control counterparts (p<0.001). Student activity levels were found to be similar in both groups with 871.33 and 822.22 steps in the intervention and control groups, respectively. Although all of the teachers thought it was important to teach HBK they were not spending time on it during classes at pretest. Three common themes were discovered: (a) Effective Teacher Training of the Segments, (b), Teachers Learned a Novel Strategy, and (c) Teachers Recommended Modifications. In summary, the KIA fitness segments received favorable views and gave teachers a way to teach HBK without reducing physical activity time.
ContributorsHodges, Michael (Author) / Kulinna, Pamela (Thesis advisor) / Van Der Mars, Hans (Committee member) / Lee, Chong (Committee member) / Arizona State University (Publisher)
Created2013
Description
The non-profit National Board for Professional Teaching Standards (NBPTS) grew out of the belief that teachers were a key factor in improving student achievement and that the profession needed a way to recognize and reward exemplary classroom teachers. Over 100,000 teachers nationwide have achieved National Board Certification across all certificate areas, with approximately 1,800 of those in the area of Physical Education. Although National Board Certified Teachers (NBCTs) have been the subjects of several studies since the inception of NBPTS, very few have investigated the impact of National Board Certification (NBC) and Physical Education Teachers. This study examined the teaching effectiveness of NBCPETs and non-NBCPETs as they taught intact Physical Education classes with their own students. Participating teachers were provided with an experimental teaching unit (ETU) with a specific learning objective, but were free to plan and design the intended instruction. This study also examined the cognitive processes of NBCPETs and non-NBCPETs during interactive teaching. Academic Learning Time-Physical Education (ALT-PE), the System for Observing Fitness Instructional Time (SOFIT), stimulated-recall interviews, and document analysis were utilized for data collection. Pre- and post-tests on the ETU specific learning objective were conducted to determine student learning and three lessons were videotaped and used in subsequent analysis. Stimulated recall interviews were conducted following each lesson, lasting between 5 to 15 minutes. Themes that emerged from the stimulated-recall interviews across all teachers included: 1) building on past skills, 2) modifications to increase physical activity, and 3) goal-directed instruction. In addition, there is no difference between the amount of time students of NBCPETs engage in moderate to vigorous physical activity (MVPA) as compared to students of non-NBCPETs. Similarly, students of non-NBCPETs are provided the same amount of motor activity at an appropriate success rate (ALT-PE) as students of NBCPETs. Lastly, the results showed no difference in gain scores of the learning objectives between the two groups of teachers.
ContributorsHouston, Jennifer Ellen (Author) / Van Der Mars, Hans (Thesis advisor) / Kulinna, Pamela (Committee member) / Cocchiarella, Martha (Committee member) / Block, Martin (Committee member) / Arizona State University (Publisher)
Created2014