Science and Mathematics Education Commons^™

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Gully And Stream Bank Erosion In Three Pastures With Different Management In Southeast Iowa, George N. Zaimes, Richard C. Schultz, Mustafa Tufekcioglu

Journal of the Iowa Academy of Science: JIAS

Gully and stream banks can be major sources of sediment and nutrients to surface waters, both major water quality problems in the United States. Sediment may also carry phosphorus to surface waters, the primary limiting nutrient causing eutrophication. Overgrazing can induce gully and stream bank erosion by reducing vegetation cover that weakens bank soil resistance to stream water flow. This study examines stream and gully bank erosion adjacent to continuous (CP), rotational (RP) and intensive rotational (IP) pastures, grazed by beef cattle in southeast Iowa. Stream and gully bank erosion were measured by: a) surveying the extent of the severely …

Confidence Wagering During Mathematics And Science Testing., Brady Jack, Chia-Ju Liu, Hoan-Lin Chiu, James Shymansky

Educator Preparation & Leadership Faculty Works

No abstract provided.

Nebraska Summary: S695 Agco Rt155a, 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 …

Test 1955 John Deere 5055e Diesel, 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 …

Rules And Insights: Connecting The Mathematical And Linguistic Abilities Of C.S. Lewis, Kim Regnier Jongerius

ACMS Journal 2008-2009

While most biographical works on C.S. Lewis give passing reference to Lewis' problems with elementary mathematics, few have made an attempt at diagnosing the difficulty or exploring its impact on his writing. A careful study of family correspondence, however, makes it clear that his learning difficulties were not with mathematics alone and suggests connections between attitudes toward and abilities in both mathematics and language. This paper will make these connections clear and will illustrate their ties to Lewis' effective mathematical references.

K-5 Mathematics Specialists' Teaching And Learning About Fractions, J. W. Whitenack, A. J. Ellington

Journal of Mathematics and Science: Collaborative Explorations

This paper describes the fraction-based mathematical activities of two teachers who are part of 3 Mathematics Specialist preparation program. Their work with fractions is traced from two perspectives: 1) their interactions with students as they struggle with fraction concepts; and, 2) their personal journeys to develop deeper understandings of fractions as participants in the Rational Numbers course that is part of their degree program. Through their stories, we gain a better understanding of the complex nature of their work with students and how their participation in the Mathematics Specialist program helps support their work in the school buildings.

Mathematics Specialists Increasingly Appreciated And Sought, D. Blount, J. Singleton

Journal of Mathematics and Science: Collaborative Explorations

No abstract provided.

Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

The Freshwater Mussels (Mollusca: Bivalvia: Unionidae) Of The Channelized Missouri River, Ellet Hoke

Journal of the Iowa Academy of Science: JIAS

The lower Missouri River has historically been viewed as a fauna! barrier for unionids due to high sediment load. However this survey of the lower (channelized) Missouri River documented the presence of 14 unionid species and the exotic Corbicula fluminea (Muller, 1774). Unionids are present in stable substrates sheltered from the effects of the river's strong currents. Analysis of early literature on the Missouri River suggests reports of an absence of unionids were not based upon thorough fieldwork, and the most commonly cited rationale for their reported absence, the high sediment load in the river, is not convincing. Pre-1938 unionid …

Dr. Lois Hattery Tiffany (1924-2009): In Memoriam, Deborah Q. Lewis

Journal of the Iowa Academy of Science: JIAS

Dr. Lois Hartery Tiffany, Distinguished Professor Emerita, Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, Iowa, died on 6 September 2009. Dr. Tiffany was an outstanding mycologist and teacher. Held in high regard by the public as "Iowa's Mushroom Lady" and known by many students, colleagues and friends as "Dr. T.," she was the matriarch of the Botany Department (now the Department of Ecology, Evolution and Organismal Biology) at Iowa State.

Table Of Contents (Back Cover)

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Som Loss And Soil Quality In The Clear Creek, Ia, A. N. Thanos Papanicolaou, Christopher G. Wilson, Ozan Abaci, Mohamed Elhakeem, Mary Skopec

Journal of the Iowa Academy of Science: JIAS

The Clear Creek, IA Experimental Watershed (CCEW), which drains to the Iowa River, experiences severe surface erosion due to a combination of high slopes, erodible soils, and extensive agriculture. Concurrent with soil loss is the removal of Soil Organic Matter (SOM). High values of SOM have been related to soil quality; therefore, excessive SOM loss corresponds to degrading soil health. Soil quality assessments are important tools for evaluating management practices in agricultural systems; however, it is difficult to measure soil quality directly at the watershed scale because it varies with a number of site-specific soil characteristics. The coupling of soil …

Aryl Ethers From Arenediazonium Tetrafluoroborate Salts: From Neat Reactions To Solvent-Mediated Effects, James A. Shriver, Daniel P. Flaherty, Cameron C. Herr

Journal of the Iowa Academy of Science: JIAS

A general procedure for the synthesis of various aryl ethers via the thermal decomposition of benzenediazonium tetrafluoroborate salts is described. Studies performed in neat alcohol at 60°C gave aryl ethers in yields ranging from 0-73%. Upon completion of a series of reactions, the effect of solvent was explored to expand the scope and relevance of this procedure. It was found that even solvents that are traditionally non-nucleophilic gave rise to products including bi-aryls and N-aryl acetamides. The utilization of an ionic liquid, l-butyl-4-methylpyridinium tetrafluoroborate, resulted in yields comparable to reactions performed in neat alcoholic solvents.

Iowa Academy Of Science 121st Annual Meeting [2009]: Advance Program, Iowa Academy Of Science

Iowa Academy of Science Documents

Contains information about the schedule and presentations for the 2009 annual meeting of the Iowa Academy of Science.

Proceedings Of The 121st Annual Meeting Of The Iowa Academy Of Science [Program, 2009], Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Welcome from our Campus Host --- 3
Program Summary/Timeline --- 4
General Session Presentations --- 6
Symposia Presentations --- 9
Special Events --- 12
Awards Luncheon --- 13
President's Banquet --- 13
ESTA Awards Banquet --- 13
IAS Annual Business Meeting --- 14
Iowa Junior Academy of Science --- 16
Field Trips --- 17
Senior Poster Program --- 19
Section Meeting Programs and Oral Presentations (Alphabetical by Section) --- 24
Abstracts (by Section) --- 31
Author Index --- 65

Contents

Journal of Mathematics and Science: Collaborative Explorations

No abstract provided.

Formulating A State Approach To Professional Development, R. E. Howard, S. Sarani, J. Woods

Journal of Mathematics and Science: Collaborative Explorations

When viewed from the perspective of an entire state's needs, the challenges of designing professional development to meet the requirements of the federal No Child Left Behind legislation of 2001 are daunting. In Oklahoma, the concerns about delivering to rural and urban populations which contain a variety of underserved populations are further complicated by the differences in the way science and mathematics are structured as disciplines. We describe two model programs, one in science and one in mathematics, which take much different approaches. However, the programs have three common elements that make them highly successful. Each program engages teachers strongly, …

Building Middle-Level Mathematics Teachers' Capacities As Teachers And Leaders: The Math In The Middle Institute Partnership, R. M. Heaton, W. J. Lewis, W. M. Smith

Journal of Mathematics and Science: Collaborative Explorations

This article describes professional development for middle-level mathematics teachers offered through the Math in the Middle Institute Partnership, a National Science Foundation-funded project to build teachers’ capacities to improve mathematics learning for all students. An overview of the project, including descriptions of its goals and curriculum are provided. Detailed descriptions of two mathematics courses and one pedagogy course are offered. The mathematics courses included here are the introductory course to the Math in the Middle Institute, as well as one of the final math courses of the Institute in which participants apply mathematical knowledge and processes to real-world problems. The …

The Penn Science Teacher Institute: A Proven Model, C. Blasie, J. Butler-Kahle

Journal of Mathematics and Science: Collaborative Explorations

The University of Pennsylvania’s Master of Chemistry Education (MCE) program graduated five cohorts of approximately twenty teachers between 2002 and 2006. One year after the teachers in the last cohort earned their degrees, the Penn Science Teacher Institute (Penn STI) initiated a follow-up study to ascertain if the goals of the MCE program had been sustained. For example, were the teachers incorporating updated content knowledge into their lessons and were their students learning more chemistry? A total of seventy-four of the eighty-two graduates participated in some aspect of this study. Because baseline data were not available for the MCE teachers …

Let's Observe!, S. W. Brown

Journal of Mathematics and Science: Collaborative Explorations

Teaching the non-science major how to teach science is a challenge! No matter what science course is being taught, professors must model good teaching strategies that promote an inquiry approach that incorporates prior knowledge, connections, a social environment, relevance, and time to actively construct new understandings of scientific concepts.

The Effects Of Block Scheduling On Ap Calculus Ab Student Achievement, Larry A. Lightner

Mathematics Graduate Theses

Student achievement on the AP Calculus AB Exam is always a concern for teachers and school districts that offer the exam. A factor of concern that also arises is a school’s schedule. A school’s schedule may have an affect on achievement. This study examines the comparison in achievement of students who take the AP Calculus AB Exam under a block schedule and a traditional schedule system. Block Scheduling is defined as a class period of 80-90 minutes with 4 periods each day, allowing a full year’s curriculum to be offered in one semester. Traditional scheduling is defined as a class …

Cooperative Learning In The Mathematics Classroom, Janine Regnier

Mathematics Graduate Theses

Student interactions are important which provokes the idea that cooperative learning should be incorporated into classrooms. Research states many benefits for incorporating cooperative learning and are included in the literature review. Cooperative groups were introduced and studied by the author, who ultimately concluded that cooperative learning does have a place in Mathematics classrooms and should be used when the lesson lends itself to a cooperative environment. The study results can be found in this paper following the literature review.

To What Degree Will Differentiated Instruction Impact Student Grades In A Middle School Classroom?, Maureen K. Wilke

Mathematics Graduate Theses

The middle school student population encompasses one of the widest ranges of diversity in the educational system. Besides cultural, religious, educational, economical diversity, the middle school student copes with physical and psychological changes as well. It is important to understand that reaching students successfully is not teaching one way, but providing a learning experience based on students’ needs. The five key differentiated strategies in the classroom are: knowing the student, the environment, meaningful lessons, tiered assignments, and assessment. Gather as much information on the students, such as data from past standardize tests, conversation with students, student journals about success and …

Virginia's Mathematics Specialist Institute Project: A Summary Of Evaluation Findings, P. S. Smith, M. Wickwire

Journal of Mathematics and Science: Collaborative Explorations

No abstract provided.

Developing Leadership In A National Cohort Of Secondary Biology Teachers: Uses Of An On-Line Course Structure To Develop Geographically Distant Professional Learning Community, P. Balcerzak, V. May, B. Schaal

Journal of Mathematics and Science: Collaborative Explorations

This report is a descriptive study of the role that on-line courses might have on the development of Professional Learning Communities (PLC’s) that support national leadership initiatives of participating high school biology teachers. The one hundred teachers involved in the Life Sciences for a Global Community (LSGC) Institute are expected not only to deepen their content knowledge, but also impact their district and state biology curricula. Additionally, the dispersion of Institute participants across the country presents a unique opportunity to develop, communicate. and implement a national coherent reform agenda. However, the geographic distance presents a barrier to collaborative design of …

The Impact Of The Lead Teacher Professional Learning Community Within The Rice University Mathematics Leadership Institute, J. Sack, N. Kamau

Journal of Mathematics and Science: Collaborative Explorations

Now in its fourth year, Rice University’s Mathematics Leadership Institute (MLI) has developed over sixty high school mathematics Lead Teachers. We focus on how membership in MLI has impacted participant teachers’ professional lives. The Lead Teacher community that emerged during MLl’s first Summer Leadership Institute embodies the characteristics of a sustaining and coherent knowledge community where teachers are able to share their secret “stories of practice in safe places . . . in order to make their personal practical knowledge explicit to themselves and to others” [1]. This article includes stories of individual teachers who refused to sacrifice hours of …

Helping Kindergarteners Make Sense Of Numbers To 100, L. B. Jaslow, V. R. Jacobs

Journal of Mathematics and Science: Collaborative Explorations

The authors share what was learned about kindergarteners' abilities to make sense of numbers to 100 when one of the authors, Linda Jaslow, took over a kindergarten class from February through the end of the school year. Through examples of how she engaged her students in nine weeks of problem solving and discussions focused on making sense of the number system, we provide evidence that the children grew substantially in their ability to count and show understanding when counting by 10's and using 10's during problem solving. Suggestions for tasks to promote continued growth are also provided. Throughout this teaching …

Test 1948: John Deere 5093e Ltd. Diesel, 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 …