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Articles 1651 - 1680 of 6761
Full-Text Articles in Physical Sciences and Mathematics
Productive Resources In Students’ Ideas About Energy: An Alternative Analysis Of Watts’ Original Interview Transcripts, Benedikt W. Harrer, Virginia J. Flood, Michael C. Wittmann
Productive Resources In Students’ Ideas About Energy: An Alternative Analysis Of Watts’ Original Interview Transcripts, Benedikt W. Harrer, Virginia J. Flood, Michael C. Wittmann
Faculty Publications
For over 30 years, researchers have investigated students’ ideas about energy with the intent of reforming instructional practice. In this pursuit, Watts contributed an influential study with his 1983 paper “Some alternative views of energy” [Phys. Educ. 18, 213 (1983)]. Watts’ “alternative frameworks” continue to be used for categorizing students’ non-normative ideas about energy. Using a resources framework, we propose an alternate analysis of student responses from Watts’ interviews. In our analysis, we show how students’ activated resources about energy are disciplinarily productive. We suggest that fostering seeds of scientific understandings in students’ ideas about energy may play an important …
The Vascular Flora Of Clay Prairie State Preserve (Butler County, Iowa): Recommendations To The Iowa State Preserve System, Edwin L. Freese, William R. Norris
The Vascular Flora Of Clay Prairie State Preserve (Butler County, Iowa): Recommendations To The Iowa State Preserve System, Edwin L. Freese, William R. Norris
Journal of the Iowa Academy of Science: JIAS
Clay Prairie State Preserve (1.2 ha) is an upland prairie located in Butler County, IA, and represents one of the last remnants of black-soil tallgrass prairie in northeast Iowa. An annotated checklist of the vascular flora of Clay Prairie is presented here, based on a previously published flora of the preserve and recent field work conducted by the authors between 1997 to 2001, and 2008 to 2011. The preserve contains a diverse vascular flora representing 50 families, 145 genera and 214 taxa (174 native to Iowa). In comparison with 26 larger prairies (4 to 121 ha) protected in the Iowa …
Students Talk About Energy In Project- Based Inquiry Science, Benedikt W. Harrer, Virginia J. Flood, Michael C. Wittmann
Students Talk About Energy In Project- Based Inquiry Science, Benedikt W. Harrer, Virginia J. Flood, Michael C. Wittmann
Benedikt W. Harrer
We examine the types of emergent language eighth grade students in rural Maine middle schools use when they discuss energy in their first experiences with Project-Based Inquiry Science: Energy, a research-based curriculum that uses a specific language for talking about energy. By comparative analysis of the language used by the curriculum materials to students’ language, we find that students’ talk is at times more aligned with a Stores and Transfer model of energy than the Forms model supported by the curriculum.
Productive Resources In Students’ Ideas About Energy: An Alternative Analysis Of Watts’ Original Interview Transcripts, Benedikt W. Harrer, Virginia J. Flood, Michael C. Wittmann
Productive Resources In Students’ Ideas About Energy: An Alternative Analysis Of Watts’ Original Interview Transcripts, Benedikt W. Harrer, Virginia J. Flood, Michael C. Wittmann
Benedikt W. Harrer
For over 30 years, researchers have investigated students’ ideas about energy with the intent of reforming instructional practice. In this pursuit, Watts contributed an influential study with his 1983 paper “Some alternative views of energy” [Phys. Educ. 18, 213 (1983)]. Watts’ “alternative frameworks” continue to be used for categorizing students’ non-normative ideas about energy. Using a resources framework, we propose an alternate analysis of student responses from Watts’ interviews. In our analysis, we show how students’ activated resources about energy are disciplinarily productive. We suggest that fostering seeds of scientific understandings in students’ ideas about energy may play an important …
Math Department Newsletter, 2012-2013 (Year In Review), Mathematics Department
Math Department Newsletter, 2012-2013 (Year In Review), Mathematics Department
Mathematics Newsletter
No abstract provided.
Contents
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Title Page, Coordinating Editor's Remarks
Title Page, Coordinating Editor's Remarks
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Challenging Pre-Service Students' Teaching Perspectives In An Inquiry-Focused Program, J. L. Pecore, A. Shelton
Challenging Pre-Service Students' Teaching Perspectives In An Inquiry-Focused Program, J. L. Pecore, A. Shelton
Journal of Mathematics and Science: Collaborative Explorations
Inquiry teaching based on constructivist learning theory has been an emphasis in pre-service education for over a decade. In general, a developmental teaching perspective supports inquiry-based instruction where teachers view learners as constructors of knowledge and teaching as providing questions, problems, and challenges that form a bridge from the learners' prior knowledge to a new, more sophisticated form of reasoning. Since teaching perspectives influence student learning, teacher effectiveness, and teacher attrition, challenging pre-service teachers to overcome experience-based convictions of a transmission perspective is necessary in teacher education. In this study, we examined the teaching perspectives of secondary, pre-service methods students …
How Does Leadership Matter? Developing And Teaching A Definition Of Hands-On Science, A Prerequisite For Effective Inquiry Teaching, D. R. Sterling
How Does Leadership Matter? Developing And Teaching A Definition Of Hands-On Science, A Prerequisite For Effective Inquiry Teaching, D. R. Sterling
Journal of Mathematics and Science: Collaborative Explorations
This descriptive case study describes leadership skills and planning for setting clear directions by program leaders for a statewide professional development initiative to extend improvement in science teaching and learning. For science teachers and leaders in Virginia, a critical part of setting clear goals that everyone can understand is defining key science terms. One of the four key terms, "hands-on science," is defined here. Materials to develop teachers' understanding of the term for effective implementation of classroom inquiry activities are shared, along with a rubric for evaluation by and for teachers. Understanding of the term "hands-on science" is necessary before …
Unlocking Undergraduate Problem Solving, D. Cline, K. Peterson
Unlocking Undergraduate Problem Solving, D. Cline, K. Peterson
Journal of Mathematics and Science: Collaborative Explorations
It is difficult to find good problems for undergraduates. In this article, we explore an interesting problem that can be used in virtually any mathematics course. We then offer natural generalizations, state and prove some related results, and ultimately end with several open problems suitable for undergraduate research. Finally, we attempt to shed some light on what makes a problem interesting.
Aims & Scope
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Scientific Inquiry And The Nature Of Science Task Force Report: Preface
Scientific Inquiry And The Nature Of Science Task Force Report: Preface
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Teaching About Scientific Inquiry And The Nature Of Science: Toward A More Complete View Of Science
Teaching About Scientific Inquiry And The Nature Of Science: Toward A More Complete View Of Science
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Infusing Problem-Based Learning (Pbl) Into Science Methods Courses Across Virginia, K. R. Thomas, P. L. Horne, S. M. Donnelly, C. T. Berube
Infusing Problem-Based Learning (Pbl) Into Science Methods Courses Across Virginia, K. R. Thomas, P. L. Horne, S. M. Donnelly, C. T. Berube
Journal of Mathematics and Science: Collaborative Explorations
This article outlines the results of a collaborative study of the effects of infusing problem-based learning (PBL) into K-12 science methods courses across four universities in Virginia. Changes in pre-service teachers' attitudes surrounding science teaching were measured before and after completing a science methods course in which they experienced PBL first-hand as participants, and then practiced designing their own PBL units for use in their future classrooms. The results indicate that exposure to PBL enhances pre-service teachers' knowledge of inquiry methods and self-efficacy in teaching science.
Understanding Mathematics And Science Advice Networks Of Middle School Teachers, D. White, A. Ruff
Understanding Mathematics And Science Advice Networks Of Middle School Teachers, D. White, A. Ruff
Journal of Mathematics and Science: Collaborative Explorations
We report findings from a research project designed to examine the mathematics and science advice networks of teachers who participated in professional development under the auspices of the NSF-funded Rocky Mountain-Middle School Math and Science Partnership. We provide descriptive statistics of results. Additionally, we reflect on the research process and discuss some of the practical challenges involved.
Grappling With Issues Of Learning Science From Everyday Experiences: An Illustrative Case Study, A.-L. Tan, M. Kim, F. Talaue
Grappling With Issues Of Learning Science From Everyday Experiences: An Illustrative Case Study, A.-L. Tan, M. Kim, F. Talaue
Journal of Mathematics and Science: Collaborative Explorations
There are different perceptions among researchers with regard to the infusion of everyday experience in the teaching of science: 1) it hinders the learning of science concepts; or, 2) it increases the participation and motivation of students in science learning. This article attempts to contemplate those different perspectives of everyday knowledge in science classrooms by using everyday contexts to teach grade 3 science in Singapore. In this study, two groups of grade 3 students were presented with a scenario that required them to apply the concept of properties of materials to design a shoe. Subsequently, the transcripts of classroom discussions …
Building A Case For Mathematics Specialist Programs, D. Blount, J. Singleton
Building A Case For Mathematics Specialist Programs, D. Blount, J. Singleton
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Right Triangles Of Gian Francesco Malfatti, J. Boyd
Right Triangles Of Gian Francesco Malfatti, J. Boyd
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
A Lesson Plan With An Arc Midpoint, G. V. Akulov, O. G. Akulov
A Lesson Plan With An Arc Midpoint, G. V. Akulov, O. G. Akulov
Journal of Mathematics and Science: Collaborative Explorations
The article introduces an explicit way of locating the arc midpoint in the Cartesian plane, which is consistent for both x- and y-coordinates and is technically accessible for students starting as young as fifteen. The authors give the proof of the statement using two trigonometry identities, and discuss some materials for innovative lessons on the arc midpoint computation that could enrich and enhance curriculum.
Reform Teaching In Mathematics And Science Courses — A Follow-Up Evaluation, G. M. Bass Jr.
Reform Teaching In Mathematics And Science Courses — A Follow-Up Evaluation, G. M. Bass Jr.
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Degradation Of Algal Palynomorphs On 34-Yr-Old Microscope Slides, Lynn A. Brant
Degradation Of Algal Palynomorphs On 34-Yr-Old Microscope Slides, Lynn A. Brant
Journal of the Iowa Academy of Science: JIAS
Reexamination of 34-yr-old microscope slides of palynological preparations reveals the loss and degradation of algal palynomorphs, in particular the green alga Pediastrum and the desmid Pleurotaenium. Results from this study suggest that great caution should be used when referring co archived palynological slides.
A New Plant Record For Iowa: Lactuca Hirsuta (Asteraceae), Thomas L. Eddy
A New Plant Record For Iowa: Lactuca Hirsuta (Asteraceae), Thomas L. Eddy
Journal of the Iowa Academy of Science: JIAS
A new record of a native vascular plant, Lactuca hirsuta Muhlenberg ex Nuttall var. sanguinea (Bigelow) Fernald, is reported for Iowa. A specimen was collected in 1983 by the author during a study of the Swaledale railroad prairie in Cerro Gordo County, north central Iowa (Eddy 1988). The plant was inexplicably excluded in the species catalogue when a Swaledale railroad flora was published in 1988; thus, this “new” Iowa record in 2013 was collected 30 years prior. The voucher specimen was “re-discovered” by Dr. Neil A. Harriman at the University of Wisconsin-Oshkosh (OSH), and its identification verified.
Smaf: A Soil Health Assessment Tool, D. L. Karlen, C. D. Nance, D. L. Dinnes, D. W. Meek
Smaf: A Soil Health Assessment Tool, D. L. Karlen, C. D. Nance, D. L. Dinnes, D. W. Meek
Journal of the Iowa Academy of Science: JIAS
The Soil Management Assessment Framework (SMAF) was developed to help quantify soil quality/health effects of tillage, crop rotation, and other soil management practices. Our objective was to determine if the SMAF could detect soil health differences after growing a single winter triticale (X Triticosecale Wittmack) crop. Soil samples were collected from 0 to 7.5- and 7.5 to 15- cm depth increments during the 2003 – 2004 and 2004 – 2005 growing seasons near Ames and Lewis, IA, and analyzed for several potential soil quality indicators. The SMAF analysis showed higher soil quality ratings for surface than subsurface samples. It also …
Test 2078: John Deere 6125m, Nebraska Tractor Test Lab
Test 2078: John Deere 6125m, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …
Nebraska Summary: S953 New Holland T5.105, Nebraska Tractor Test Lab
Nebraska Summary: S953 New Holland T5.105, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …
Nebraska Summary: S951 Case-Ih Farmall 115u, Nebraska Tractor Test Lab
Nebraska Summary: S951 Case-Ih Farmall 115u, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …
Nebraska Summary: S950 Case-Ih Farmall 105u, Nebraska Tractor Test Lab
Nebraska Summary: S950 Case-Ih Farmall 105u, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …
Nebraska Summary: S949 Case-Ih Farmall 95u, Nebraska Tractor Test Lab
Nebraska Summary: S949 Case-Ih Farmall 95u, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …
Nebraska Summary: S947 New Holland T4.105, Nebraska Tractor Test Lab
Nebraska Summary: S947 New Holland T4.105, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …