Your search found 14997 results.

Descriptors:
Abstract Reasoning; Chemistry; Figurative Language; Cognitive Processes; Scientific Concepts; Problem Solving; Intuition; Science Instruction; Teaching Methods; Graduate Students; Doctoral Programs; College Science; Thermodynamics; Concept Formation; Foreign Countries

Abstract:
A growing body of research has examined the experiential grounding of scientific thought and the role of experiential intuitive knowledge in science learning. Meanwhile, research in cognitive linguistics has identified many "conceptual metaphors" (CMs), metaphorical mappings between abstract concepts and experiential source domains, implicit in everyday and scientific language. However, the contributions of CMs to scientific understanding and reasoning are still not clear. This study explores the roles that CMs play in scientific problem-solving through a detailed analysis of two physical chemistry PhD students solving problems on entropy. We report evidence in support of three claims: a range of CMs are used in problem-solving enabling flexible, experiential construals of abstract scientific concepts; CMs are coordinated with one another and other resources supporting the alignment of qualitative and quantitative reasoning; use of CMs grounds abstract reasoning in a "narrative" discourse incorporating conceptions of paths, agents, and movement. We conclude that CMs should be added to the set of intuitive resources others have suggested contribute to expertise in science. This proposal is consistent with two assumptions: that cognition is embodied and that internal cognitive structures and processes interact with semiotic systems. The implications of the findings for learning and instruction are discussed. (Contains 1 table, 6 figures and 9 footnotes.) Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

More Info:
Help | Tutorial Help Finding Full Text |  More Info:
Help Find in a Library |  Publisher's website

Descriptors:
Chemistry; Entrepreneurship; STEM Education; Secondary School Curriculum; Secondary School Science; Curriculum Enrichment; Relevance (Education); Curriculum Development; Integrated Curriculum; Performance Factors; Barriers; Change Strategies; Educational Change; School Restructuring; Science Process Skills; Best Practices

Abstract:
This paper discussed the need to restructure STM (science, technology, and mathematics) education to reflect entrepreneurship. This is because the present STM education has not achieved its aim of making graduates self-reliant. Entrepreneurship education if introduced in the STM education will produce graduate who can effectively manage their personal businesses. Entrepreneurship education was explained and the advantages outlined. The paper gave an insight into what the chemistry education will look like when entrepreneurship education is included using secondary school chemistry. This situation applies to biology education and in the application of technology to teaching and learning. Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

 ERIC Full Text (43K) |  More Info:
Help Find in a Library

Descriptors:
Foreign Countries; Postsecondary Education; Student Teachers; Chemistry; Secondary School Science; Teaching Methods; Teaching Skills; Student Teaching; Teacher Evaluation; Teacher Behavior; Factor Analysis; Interrater Reliability; Construct Validity

Abstract:
The study was designed to develop and factorially validate an instrument for measuring teaching practice skills of chemistry student-teachers in University of Nigeria, Nsukka. Two research questions guided the study. The design of the study was instrumentation. All the chemistry student-teachers in the Department of Science Education, University of Nigeria, Nsukka, involved in teaching practice in November 2011 formed the population for the study. No sampling technique was used as all the population formed the sample for the study. The instrument known as TPEF (teaching practice evaluation form) was developed. It was used to collect data for answering the research questions. The instrument was face validated and subjected to factor analysis using rotated component matrix to establish the construct validity. FL (factor loading) range of 0.35 and above (Meredith, 1969) was used for the extraction of the valid items. Internal consistency reliability coefficient of the instrument was established using Kendall's coefficient of concordance. The result of the analysis shows that TPEF was valid and reliable. It also shows that there was agreement among the raters. Based on these findings, the educational implications were discussed and recommendations made including that teachers in tertiary institutions should use this instrument in assessing chemistry student-teachers during their teaching practice due to its validity and reliability in assessing teaching practice skills in chemistry. A Teaching Practice Evaluation Form for Chemistry Students is appended. (Contains 2 tables.) Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

 ERIC Full Text (66K) |  More Info:
Help Find in a Library

Descriptors:
Historians; Comparative Analysis; Reading; Reader Text Relationship; Mathematics; Professional Personnel; Content Area Reading; Chemistry; Mathematics Teachers

Abstract:
In a recent article published in this journal, Shanahan, Shanahan, and Misischia investigated the differences in how chemists, historians, and mathematicians read text specific to their disciplines. Unlike the chemists and historians, the pair of mathematicians in this study did not consider sources when reading and evaluating their text. In this response, we contend that most mathematicians regularly do consider sources when reading mathematical arguments and papers. We summarize the results of four empirical studies, which suggest that this is the case. (Contains 2 notes.) Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

More Info:
Help | Tutorial Help Finding Full Text |  More Info:
Help Find in a Library |  Publisher's website

Descriptors:
Action Research; Teaching Methods; Technological Literacy; Feedback (Response); Teacher Attitudes; Scientific Literacy; Cooperation; Science Teachers; Chemistry; Attitude Change; Case Studies; Program Implementation; Interviews; Positive Attitudes; Reflection; Faculty Development; Inservice Teacher Education; Secondary School Teachers; Foreign Countries; Science Instruction

Abstract:
The main goal of this study was to explore the role of collaborative action research in eliciting change in teacher beliefs. The beliefs were those of five chemistry teachers in implementing a new teaching approach, geared to enhancing students' scientific and technological literacy (STL). The teacher beliefs were analysed based on Ajzen's Theory of Planned Behaviour (2005) by looking at the teacher's (a) attitude towards implementing STL modules, (b) perceived subjective norms, and (c) behavioural control regarding the new teaching approach. After an introductory year, when teachers familiarised themselves with the new approach, a collaborative action research project was initiated in the second year of the study, helping teachers to minimise or overcome initially perceived constraints when implementing STL modules in their classroom. The processes of teacher change and the course of the project were investigated by teacher interviews, teacher informal commentaries, and meeting records. The formation of positive beliefs towards a STL approach increased continuously, although its extent and character varied depending on the teacher. The close cooperation, in the format of collaborative action research and especially through teacher group reflections and perceived collegial support, did support teacher professional development including change in their beliefs towards the new teaching approach. Additionally, positive feedback gained from other teachers through running a two-day in-service course in year three helped to strengthen all five teachers' existing beliefs towards the new approach. The current research demonstrated that perceived constraints, where identified, can be meaningfully addressed by teachers, through undertaking collaborative action research. (Contains 1 table and 1 figure.) Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

More Info:
Help | Tutorial Help Finding Full Text |  More Info:
Help Find in a Library |  Publisher's website

Descriptors:
Physics; Program Effectiveness; Chemistry; Secondary School Students; Foreign Countries; Probability; Labor Market; Science Education; Educational Policy; Extracurricular Activities; Universities; Enrollment; Pharmaceutical Education; Gender Differences; Expectation; Educational Trends; Mathematics

Abstract:
In reaction to the OECD-wide declining trend in scientific enrollments, the Italian government launched a policy in 2005 to promote the study of science at the university. The policy promoted extra-curricular activities for secondary school students in Chemistry, Physics, Math and Materials Science. This article evaluates the policy impact on students' choice of the field of study. We use an intention to treat effect and administrative data on enrollment at two Italian universities. The findings indicate that the probability of enrolling in a scientific track increases by 3% for males. We find no effect for females. Participating in activities in Math increases the probability of enrolling in Physics and "vice versa". The treatment had also a positive impact on enrollments in Pharmacy. The results suggest that the policy was successful in correcting the labour market expectations of male students. (Contains 8 tables and 4 figures.) Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

More Info:
Help | Tutorial Help Finding Full Text |  More Info:
Help Find in a Library |  Publisher's website

Descriptors:
College Instruction; Undergraduate Study; College Mathematics; College Science; Mathematics Instruction; Science Instruction; Instructional Development; College Faculty; Case Studies; Observation; Interviews; Network Analysis; Course Descriptions; Teaching Methods; Educational Technology; Technology Uses in Education; Learner Engagement; Research Universities; Physics; Chemistry; Biology; Geology

Abstract:
Descriptions of faculty practice that illuminate nuances of how course planning and classroom instruction occur in specific contexts are important to inform pedagogical interventions. The study reported in this article draws on systems-of-practice theory to focus on the dynamic interplay among actors, artifacts, and tasks that constrains activities such as course planning and constitutes other activities, such as classroom instruction. This qualitative case study of faculty teaching in math and science disciplines at 3 research universities is based on interview and classroom observation data (n = 57 instructors) that are analyzed using causal network and social network analysis techniques. Results indicate that course syllabi are important organizational artifacts that are created by curriculum committees, inherited from previous instructors, and shaped by consideration of the sequential acquisition of knowledge. Faculty perceived that although course syllabi delimit the type and temporal sequencing of material for faculty, they are generally free to teach how they like. Observation data reveal discipline-specific configurations in frequently used teaching methods, cognitive engagements, and the use of instructional technology. These results also demonstrate that conceptualizing teaching solely as the use of particular methods (e.g., lecture) obscures subtle features of practice. Using the approach outlined in this article, instructional designers can obtain insights into meanings and practices that can be used to design and implement locally attuned reform initiatives. (Contains 7 tables, 7 figures, and 19 footnotes.) Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

More Info:
Help | Tutorial Help Finding Full Text |  More Info:
Help Find in a Library |  Publisher's website

Descriptors:
Preservice Teachers; Epistemology; Beliefs; Physics; Chemistry; Biology; Mixed Methods Research

Abstract:
The purposes of the study were to assess preservice teachers' domain-specific epistemological beliefs and to investigate whether preservice teachers distinguish disciplinary differences (physics, chemistry, and biology) in domain-specific epistemological beliefs. Mixed-method research design guided the present research. The researcher explored three epistemological dimensions: certainty and simplicity of knowledge, justification for knowing, and source of knowledge. Both quantitative and qualitative results suggested that a domain-specific epistemological beliefs system is a valid model to describe preservice teachers' epistemological beliefs. In terms of epistemological beliefs, disciplinary differences in physics, chemistry, and biology were discussed in the last parts of the study. Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

More Info:
Help | Tutorial Help Finding Full Text |  More Info:
Help Find in a Library |  Publisher's website

Descriptors:
Chemistry; Class Activities; Learning Activities; Science Instruction; Case Method (Teaching Technique); Writing Across the Curriculum; High School Students; Case Studies; Academic Achievement; Correlation

Abstract:
This study investigated the impact on chemistry learning of the degree to which students embedded or integrated multiple modes of representation in end of unit writing-to-learn activities. A multi-case study approach utilizing quasi-experimental methodology involving intact high school chemistry classes taught by two different teachers was employed. Approximately half of the classes for each teacher were designated treatment classes and students in these classes participated in specific classroom activities designed to encourage the use of strategies to embed multiple modes within text in student writing. Control classes did not participate in these activities. All classes with the same teacher participated in identical end of unit writing tasks followed by identical end of unit assessments. Writing tasks and end of unit assessments were teacher designed and were therefore unique to each setting. Data from each teacher was initially analyzed independently to explore characteristics of student writing and student performance on end of unit assessments. This was followed by cross case analysis. Analysis of quantitative data indicated that for the first teacher (n = 70 students), treatment classes significantly outperformed control classes on two different measures of writing characteristics during a first unit of study, two measures of writing for the second unit, and three categories of end of unit instruction for the second unit. For the second teacher (n = 95), treatment classes outperformed control classes on two writing characteristics and three end of unit assessment categories during the only unit of study assessed. In addition, at both sites, significant positive correlations were found between all writing characteristic measurements and end of unit assessment performance. These results not only support the use of multimodal writing-to-learn tasks as a pedagogical tool to improve chemistry learning, but specifically suggest benefit when multiple modes are effectively linked within these tasks. Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

More Info:
Help | Tutorial Help Finding Full Text |  More Info:
Help Find in a Library |  Publisher's website

Descriptors:
Science Education; Goal Orientation; Persuasive Discourse; Inquiry; Critical Thinking; Abstract Reasoning; Chemistry; Laboratory Experiments; Hypothesis Testing

Abstract:
One of the goals of science education is to provide students with the ability to construct arguments--reasoning and thinking critically in a scientific context. Over the years, many studies have been conducted on constructing arguments in science teaching, but only few of them have dealt with studying argumentation in the laboratory. Our research focuses on the process in which students construct arguments in the chemistry laboratory while conducting various types of experiments. It was found that inquiry experiments have the potential to serve as an effective platform for formulating arguments, owing to the features of this learning environment. The discourse during inquiry-type experiments was found to be rich in arguments, whereas that during confirmatory-type experiments was found to be sparse in arguments. The arguments, which were developed during the discourse of an open inquiry experiment, focus on the hypothesis-building stage, analysis of the results, and drawing appropriate conclusions. Note:The following two links are not-applicable for text-based browsers or screen-reading software. Show Hide Full Abstract

Related Items: Show Related Items

Full-Text Availability Options:

More Info:
Help | Tutorial Help Finding Full Text |  More Info:
Help Find in a Library |  Publisher's website