Global ETD Search

1	Metacognitive tutoring for inquiry-driven modeling Joyner, David A. 08 June 2015 (has links) Over the past several decades, many K-12 classes have moved to use open, inquiry-based approaches to science instruction; research has shown some benefits from these approaches. However, there also exist significant challenges in teaching scientific modeling and inquiry, some based on their nature as metacognitive skills and others based on the general difficulty in providing guided instruction in open-ended exploratory learning contexts. To address these challenges, this dissertation presents a metacognitive tutoring system that teaches students an authentic process of inquiry-driven scientific modeling within an exploratory science learning environment. The design of the metacognitive tutoring system is informed by the literature on the process of scientific modeling and inquiry in both education and science, and it draws from AI theories of metacognition and intelligent tutoring. The tutoring system monitors the performance of teams of students in an open inquiry task in ecology. The system provides feedback on demand about how well the team is doing in investigating and explaining the system, and it also intervenes when errors in the process are observed or when new abilities are demonstrated. To evaluate this system, a controlled experiment was conducted with 237 students in a middle school life science classroom. In one condition, teams of students completed the activity without the tutoring system enabled, while in the other condition teams interacted with the tutoring system during part of their inquiry and modeling process. Evaluations of this experiment have shown that students who interact with the tutoring system improved in their attitudes toward scientific inquiry and careers in science, and that teams that interact with the tutoring system generate better explanations of ecological phenomena. Metacognitive tutoring Intelligent tutoring systems Inquiry learning Authentic science
2	Soil-microbe-volatile organic compound (SMVOC) analysis and authentic science inquiry into gas chromatography for a general chemistry laboratory class Ruhs, Christopher Vincent 06 August 2011 (has links) Sound research and effective teaching are both essential to the progress of science. This thesis encompasses two studies to address the two needs: a multi-scale soil study designed to validate a novel soil biological characterization method; and a pilot pedagogical study designed to test the efficacy of authentic science inquiry into gas chromatography. The soil study relies on a comparison of six soils taken from the Bahamas and Michigan. The novel method, using soil-derived VOCs analyzed via gas chromatography-mass spectrometry (GC-MS), proved effective for resolving soils, as hypothesized, and may prove useful for analyzing soil biology rapidly and non-destructively in future studies. The pilot pedagogical study compares traditional recipe-style instruction with authentic science inquiry in an undergraduate chemistry laboratory class. Pre- and post-assessments of students’ conceptual understanding, retention of terms, and attitude revealed the hypothesized superior efficacy of authentic science inquiry over traditional recipe-style instruction. attitude authentic science inquiry biological characterization method soil microorganisms GC-MS FAME BIOLOG SMVOC retention pedagogy
3	Students as scientists : a study of motivation in the science classroom / Forskning på schemat : högstadieelevers motivation för naturvetenskap Hellgren, Jenny Maria January 2016 (has links) School science and mathematics have been criticized for being difficult, de-contextualised and teacher-centred. This thesis concerns student motivation in science and mathematics in secondary school, and in particular student motivation in relation to student-teacher-scientist partnerships (STSPs) and an authentic science task called the Medicine Hunt where students help scientists to find new antibiotics. The purpose of this dissertation is to interrogate the importance of authentic tasks for motivation in the science classroom. The thesis takes a starting point in motivation theories, with self-determination theory (SDT) in focus, and also builds on the hierarchical model of intrinsic and extrinsic motivation (HMIEM). A mixed-methods approach is used first, to find out what factors are important for students’ positive emotions and experiences in the classroom, and second, to learn more about the importance of authentic tasks using student interviews and observations in combination with questionnaires that evaluate students’ motivation. The studies reveal that the notion of having learnt something and intrinsic motivation are central for students’ positive emotions. Further, many situational factors, such as teacher support, autonomy, clear goals, and novelty of the task are central for both positive emotions and experiences in science and mathematics. Regarding the Medicine Hunt, students were positive and referred most of their positive experiences to science-related aspects, and the novelty of authentic science. Teachers gave different opportunities for competence, autonomy or relatedness when implementing the project in their classrooms, and these differences were more important for students’ initiatives and outcomes than students’ initial contextual motivation for school science. Students’ contextual motivation for science can change and the Medicine Hunt arrested the well-documented decline in students’ intrinsic motivation for science during the secondary school years. This thesis argues that authentic tasks implemented as STSPs such as the Medicine Hunt can contribute considerably to school science by providing motivating situations that channel students’ positive emotions and positive experiences, and that is possible to create authentic science learning situations in which both more and less motivated students can flourish. The findings highlight the teachers’ role in supporting the students’ process of extending their understanding of what science can include and in supporting students’ confidence as they adopt a broader and more authentic view of science when learning as part of a successful authentic STSP science project. The findings also suggest that more research focussing on motivation in different authentic situations, and how students’ experiences of authentic science can affect motivation in the longer term, is needed. / Lärandesituationens påverkan på elevers affektiva upplevelser och lärande motivation emotions experiences authentic science student-teacher-scientist partnership secondary school implementation classroom mathematics self-determination theory
4	Preparation and evaluation of the CASPiE Project at Ball State University : with special consideration on the development and preparation for peer leaders in the laboratory / Preparation and evaluation of the Center for Authentic Science Practice in Education Project at Ball State University Smith, Dustan A. January 2006 (has links) In the typical general chemistry environment, the use of lecture and laboratory are important components to the instruction. The Center for Authentic Science Practice in Education (CASPiE) Project, now being implemented at Ball State University, uses a research module approach to provide laboratory instruction. This new approach not only engages students in authentic research practices but applies the Peer Led Team Learning (PLTL) concept to the learning environment. In this study, the implementation of training techniques and the overall development of the peer leaders at Ball State were investigated. As a result, several recommendations are presented to improve the overall experience of the peer leaders and the students they serve. These include the continuation of current training techniques with more emphasis given to reflection with the peer leaders and the faculty of their impact and the institution of a training schedule for peer leaders that includes student learning styles, module content and instrumentation, and techniques for interacting with students. / Department of Chemistry Peer teaching -- Indiana -- Muncie.
5	Understanding high school students’ science internship: at the intersection of secondary school science and university science Hsu, Pei-Ling 28 August 2008 (has links) In this dissertation I explore the nature of an internship for high school students in a university science laboratory and the issues that arise from it. The investigation of science internships is relatively new to science education; therefore, this exploration is urgently needed. Twenty-one participants were involved in the internship experience, including 13 students, one teacher, two research scientists, and five technicians. Data sources include observations, field notes, and videotapes. Drawing on four coherent and complementary research tools—cultural-historical activity theory, discourse analysis, conversation analysis, and phenomenography, I articulate a variety of phenomena from multiple perspectives. The phenomena identified in the dissertation include (a) the discursive resources deployed by a teacher for interesting and inviting students to participate in science; (b) the discursive resources high school students used for articulating their interests in science-related careers; (c) the natural pedagogical conversations for accomplishing the work of teaching and learning during the internship; (d) the theoretical concepts mobilized for describing the unfolding of science expertise in the internship; (e) participants’ ways of experiencing the science internship; and (f) students’ understandings of scientific practice after participating in the internship. The study identifies many useful resources for understanding the nature of the science internship and provides a foundation for future research. The findings reported here will also serve others as a springboard for establishing partnerships between high schools and science communities and improving teaching and learning in science education. science internship science eduction authentic science discourse studies internship interaction internship experience discourse analysis conversation analysis phenomenography activity theory
6	Understanding high school students’ science internship: at the intersection of secondary school science and university science Hsu, Pei-Ling 28 August 2008 (has links) In this dissertation I explore the nature of an internship for high school students in a university science laboratory and the issues that arise from it. The investigation of science internships is relatively new to science education; therefore, this exploration is urgently needed. Twenty-one participants were involved in the internship experience, including 13 students, one teacher, two research scientists, and five technicians. Data sources include observations, field notes, and videotapes. Drawing on four coherent and complementary research tools—cultural-historical activity theory, discourse analysis, conversation analysis, and phenomenography, I articulate a variety of phenomena from multiple perspectives. The phenomena identified in the dissertation include (a) the discursive resources deployed by a teacher for interesting and inviting students to participate in science; (b) the discursive resources high school students used for articulating their interests in science-related careers; (c) the natural pedagogical conversations for accomplishing the work of teaching and learning during the internship; (d) the theoretical concepts mobilized for describing the unfolding of science expertise in the internship; (e) participants’ ways of experiencing the science internship; and (f) students’ understandings of scientific practice after participating in the internship. The study identifies many useful resources for understanding the nature of the science internship and provides a foundation for future research. The findings reported here will also serve others as a springboard for establishing partnerships between high schools and science communities and improving teaching and learning in science education. science internship science eduction authentic science discourse studies internship interaction internship experience discourse analysis conversation analysis phenomenography activity theory
7	Evaluation of a Novel Biochemistry Course-Based Undergraduate Research Experience (CURE) Stefan M Irby (6326255) 15 May 2019 (has links) <p>Course-based Undergraduate Research Experiences (CUREs) have been described in a range of educational contexts. Although various learning objectives, termed anticipated learning outcomes (ALOs) in this project, have been proposed, processes for identifying them may not be rigorous or well-documented, which can lead to inappropriate assessment and speculation about what students actually learn from CUREs. Additionally, evaluation of CUREs has primarily relied on student and instructor perception data rather than more reliable measures of learning.This dissertation investigated a novel biochemistry laboratory curriculum for a Course-based Undergraduate Research Experience (CURE) known as the Biochemistry Authentic Scientific Inquiry Lab (BASIL). Students participating in this CURE use a combination of computational and biochemical wet-lab techniques to elucidate the function of proteins of known structure but unknown function. The goal of the project was to evaluate the efficacy of the BASIL CURE curriculum for developing students’ research abilities across implementations. Towards achieving this goal, we addressed the following four research questions (RQs): <b>RQ1</b>) How can ALOs be rigorously identified for the BASIL CURE; <b>RQ2</b>) How can the identified ALOs be used to develop a matrix that characterizes the BASIL CURE; <b>RQ3</b>) What are students’ perceptions of their knowledge, confidence and competence regarding their abilities to perform the top-rated ALOs for this CURE; <b>RQ4</b>) What are appropriate assessments for student achievement of the identified ALOs and what is the nature of student learning, and related difficulties, developed by students during the BASIL CURE? To address these RQs, this project focused on the development and use of qualitative and quantitative methods guided by constructivism and situated cognition theoretical frameworks. Data was collected using a range of instruments including, content analysis, Qualtrics surveys, open-ended questions and interviews, in order to identify ALOs and to determine student learning for the BASIL CURE. Analysis of the qualitative data was through inductive coding guided by the concept-reasoning-mode (CRM) model and the assessment triangle, while analysis of quantitative data was done by using standard statistical techniques (e.g. conducting a parried t-test and effect size). The results led to the development of a novel method for identifying ALOs, namely a process for identifying course-based undergraduate research abilities (PICURA; RQ1; Irby, Pelaez, & Anderson 2018b). Application of PICURA to the BASIL CURE resulted in the identification and rating by instructors of a wide range of ALOs, termed course-based undergraduate research abilities (CURAs), which were formulated into a matrix (RQs 2; Irby, Pelaez, & Anderson, 2018a,). The matrix was, in turn, used to characterize the BASIL CURE and to inform the design of student assessments aimed at evaluating student development of the identified CURAs (RQs 4; Irby, Pelaez, & Anderson, 2018a). Preliminary findings from implementation of the open-ended assessments in a small case study of students, revealed a range of student competencies for selected top-rated CURAs as well as evidence for student difficulties (RQ4). In this way we were able to confirm that students are developing some of the ALOs as actual learning outcomes which we term VLOs or verified learning outcomes. In addition, a participant perception indicator (PPI) survey was used to gauge students’ perceptions of their gains in knowledge, experience, and confidence during the BASIL CURE and, therefore, to inform which CURAs should be specifically targeted for assessment in specific BASIL implementations (RQ3;). These results indicate that, across implementations of the CURE, students perceived significant gains with large effect sizes in their knowledge, experience, and confidence for items on the PPI survey (RQ3;). In our view, the results of this dissertation will make important contributions to the CURE literature, as well as to the biochemistry education and assessment literature in general. More specifically, it will significantly improve understanding of the nature of student learning from CUREs and how to identify ALOs and design assessments that reveal what students actually learn from such CUREs - an area where there has been a dearth of available knowledge in the past. The outcomes of this dissertation could also help instructors and administrators identify and align assessments with the actual features of a CURE (or courses in general), use the identified CURAs to ensure the material fits departmental or university needs, and evaluate the benefits of students participating in these innovative curricula. Future research will focus on expanding the development and validation of assessments so that practitioners can better evaluate the efficacy of their CUREs for developing the research competencies of their undergraduate students and continue to render improvements to their curricula.</p> Biochemistry Education Course-based Undergraduate Research Course-based Research Experiences CURE anticipated learning outcomes ALOs ALO CURAs research abilities PICURA ALO matrix BASIL weighted-relevance WR verified learning outcomes VLOs CUREs biochemistry computational biochemistry bioinformatics biochemistry education chemistry education chemistry teaching laboratory upper-division ACE-Bio experimental competencies Authentic science inquiry chemical education assessment assessment design Student understanding student difficulties biochemistry laboratory experiments biochemistry teaching laboratory chemistry teaching laboratory chemistry teaching laboratories predicting protein function protein inquiry-based learning inquiry-based teaching content analysis open-ended survey interviews semi-structured interviews PPI participant perception indicator assessment triangle CRM conceptual reasoning mode conceptual-reasoning-mode model curriculum evaluation experimental abilities discovery skills learning objectives learning outcomes LO LOs collaborations collaborative course implementation implementation student difficuluties experimental learning experimental literacy data-representation ACE-Bio Network Likert-survey

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