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Articles 3631 - 3660 of 7069

Full-Text Articles in Science and Mathematics Education

Problems In Which Given Information Is Ignored, Howard Wachtel May 2001

Problems In Which Given Information Is Ignored, Howard Wachtel

Humanistic Mathematics Network Journal

A set of problems is presented and discussed for which there is a tendency for students to ignore part of the given information in the problem and to substitute some extraneous assumptions. Typical student reactions are also discussed.


The Need To Diversify The Ranks Of Teachers Of Mathematics, Frederick L. Uy May 2001

The Need To Diversify The Ranks Of Teachers Of Mathematics, Frederick L. Uy

Humanistic Mathematics Network Journal

This paper intends to give rationales for the need to diversify the ranks of teachers of mathematics. It also suggests ideas that we can take to alleviate the situation that we currently are confronting.


Educating The Public About School Mathematics, Zalman Usiskin May 2001

Educating The Public About School Mathematics, Zalman Usiskin

Humanistic Mathematics Network Journal

No abstract provided.


Book Review: The Teaching Gap By James W. Stigler And James Hiebert, Michael L. Brown May 2001

Book Review: The Teaching Gap By James W. Stigler And James Hiebert, Michael L. Brown

Humanistic Mathematics Network Journal

No abstract provided.


113th Session Iowa Academy Of Science Awards Luncheon, April 20, 2001, Iowa Academy Of Science Apr 2001

113th Session Iowa Academy Of Science Awards Luncheon, April 20, 2001, Iowa Academy Of Science

Iowa Academy of Science Documents

Program:

--- Introductions - Charles Martinson, President
--- Recognition of students participating in various statewide activities - Ernie Schiller, Chair, Student Programs Committee
--- Presentation of scholarship winners and 2002 AJAS representatives - Larry Schwinger, Director, Iowa Junior Academy of Science
--- Presentation of Excellence in Science Teaching Awards - Jeff Weld, Director, ESTA Program


Iowa Academy Of Science President's Banquet, 113th Session, Iowa Academy Of Science Apr 2001

Iowa Academy Of Science President's Banquet, 113th Session, Iowa Academy Of Science

Iowa Academy of Science Documents

Banquet Program:

Awards - Distinguished Iowa Science Teaching: Dr. Paul L. Garvin
Awards - Distinguished Iowa Science Teaching: Dr. Mark Schneider
Awards - Distinguished Iowa Scientist: Dr. Richard G. Baker
Awards - Distinguished Service Award: Dr. Wayne I. Anderson
General Session II: Dr. Kamlesh Lulla, "The International Space Station: New Opportunities for Research and Education Outreach"


Program Abstracts, 113th Session, Iowa Academy Of Science, April 20-21, 2001, Iowa Academy Of Science Apr 2001

Program Abstracts, 113th Session, Iowa Academy Of Science, April 20-21, 2001, Iowa Academy Of Science

Iowa Academy of Science Documents

Presentation abstracts from the annual meeting of the Iowa Academy of Science


Profitability Of Crop Rotations In Iowa In A Stress Environment, Derrick N. Exner, R. M. Cruse Jan 2001

Profitability Of Crop Rotations In Iowa In A Stress Environment, Derrick N. Exner, R. M. Cruse

Journal of the Iowa Academy of Science: JIAS

Small grains crops have traditionally been included in Midwestern cropping systems, but their use is restricted by uncertain yields, poor prices, and lack of on-farm uses in operations without livestock. We compared the corn (Zea mays L.)-soybean (Glycine max (L.) Merr.) crop rotation to actual or simulated three-yr rotations at two sites in Iowa between 1986 and 1989. Water was generally more limiting than was nitrogen, which produced minimal response in the corn to which it was applied. April-November precipitation at Nashua, Iowa ranged from 59 to 111 % of average, while at Des Moines, Iowa it was 77% of …


Editorial Board & Iowa Academy Of Science Officers And Directors Jan 2001

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Toxicity Of Cedar River Water And Sediment To Larval Walleye, Todd A. Phillips, Robert C. Summerfelt Jan 2001

Toxicity Of Cedar River Water And Sediment To Larval Walleye, Todd A. Phillips, Robert C. Summerfelt

Journal of the Iowa Academy of Science: JIAS

Although all anthropogenic stressors affecting aquatic ecosystems have not been isolated, suspended solids, sediment, and pesticides are believed to be major factors in agroecosystems. In the spring of 1998 and 1999, static 48-h tests were conducted to determine the toxicity of water and sediment collected from the Cedar River to prolarval, postlarval I, and postlarval II walleye (Sttzostedzon vitreum). River water and sediment were not more toxic to any larval stage of walleye than reference water and sediment. Cedar River sediments, suspended solids, and water were examined for occurrence of the most common herbicides and insecticides in Iowa. No pesticides …


Introduction, Neil P. Bernstein Jan 2001

Introduction, Neil P. Bernstein

Journal of the Iowa Academy of Science: JIAS

In this issue, the Iowa Academy of Science honors three of our colleagues who passed away in 2000. Duane Isely, Larry Eilers, and George Knaphus shared many of the same interests. All three were botanists, although George's research on fungi and heterotrophic protistans relegated him to the botany departments only by default. However, more importantly, all three were teachers. I believe that one of the lessons that they would have taught was the need to carefully document present patterns if we are to understand the future. However, many biologists poorly support this concept today.


Cover - Table Of Contents Jan 2001

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Theism And Mathematical Realism, John Byl Jan 2001

Theism And Mathematical Realism, John Byl

ACMS Journal 2004

This paper examines connections between theism and mathematical realism. Mathematical realism, which offers the best account of mathematics, strongly supports theism. Theism, in turn, supports mathematical realism. Theism readily explains the intricate relations between mathematics, matter, and mind. The attributes of the biblical God provide a justification for classical mathematics.


Mathematics As Worship, David J. Stucki Jan 2001

Mathematics As Worship, David J. Stucki

ACMS Journal 2004

This paper treats worship in a broad, inclusive sense as the primary and necessary response of human beings to their creator. It provides a brief overview of the relationship between mathematics and theology from the Pythagoreans to the present. It argues that all knowledge is contingent upon faith and thus that contemplation of mathematical insights can lead to worship of God.


The Annual Meeting Of The Iowa Academy Of Science April 20-21, 2001 [Program, 113th Meeting], Iowa Academy Of Science Jan 2001

The Annual Meeting Of The Iowa Academy Of Science April 20-21, 2001 [Program, 113th Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Program Summary --- 1
General Session Speakers --- 4
Awards --- 7
Symposia Programs --- 8
Special Events --- 8
Poster Sessions --- 9
Section Programs/Special Sessions --- 9
Agricultural Sciences --- 9
Anthropology --- 10
Botany --- 11
Cellular, Molecular & Microbiology --- 15
Chemical Education --- 13
Chemistry: Inorganic, Analytical & Physical --- 16
Chemistry: Organic & Biological --- 16
Conservation --- 17, 24
Earth Science Teaching --- 13
Elementary Science Teaching --- 13
Engineering --- 12
Geology --- 17, 19
Physics --- 20
Physiology --- 20
Psychology & Linguistics --- 10
Science Teaching --- 13, 22, …


Iowa Academy Of Science 113th Annual Meeting [2001]: Advance Program, Iowa Academy Of Science Jan 2001

Iowa Academy Of Science 113th Annual Meeting [2001]: Advance Program, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.


In Memoriam: Larry Eilers, Paul A. Christiansen Jan 2001

In Memoriam: Larry Eilers, Paul A. Christiansen

Journal of the Iowa Academy of Science: JIAS

Larry came to botany along an unusual route. His first college degree was in engineering. After a stint at secondary teaching Larry worked at Collins Radio in Cedar Rapids, then returned to UNI (SCI then) and took a master's degree in biology, He continued his study at the University of Iowa under Dr. Robert Thorne and took his Ph.D. in 1964. He did the flora of the Iowan Surface (the Iowan Drift in those days). He taught at Syracuse University and University of Indiana at Terra Haute before joining the faculty of the University of Northern Iowa.


Annual Meeting Of The Iowa Academy Of Science Jan 2001

Annual Meeting Of The Iowa Academy Of Science

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Factors Associated With Occurrence And Density Of Wetland Birds In The Prairie Pothole Region Of Iowa, Steve E. Fairbairn, James J. Dinsmore Jan 2001

Factors Associated With Occurrence And Density Of Wetland Birds In The Prairie Pothole Region Of Iowa, Steve E. Fairbairn, James J. Dinsmore

Journal of the Iowa Academy of Science: JIAS

Wetlands within wetland complexes in northwestern, north-central, and central Iowa were surveyed for bird use in 1997 and 1998. Species occurrence, species richness, and density of nesting species were related to wetland habitat variables. A habitat diversity index measuring the evenness of distribution of the different habitats within a wetland was the best predictor of species richness in both years. The habitat diversity index was also the best predictor of the occurrence of individual species in both 1997 and 1998. Eight of 11 species (7 3%) in 1997 and 13 of 18 species (72%) in 1998 had greater densities in …


Back Cover Jan 2001

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Front Matter Jan 2001

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Tests Of A Rotenone-Impregnated Bait For Controlling Common Carp, Joseph L. Bonneau, Dennis L. Scarnecchia Jan 2001

Tests Of A Rotenone-Impregnated Bait For Controlling Common Carp, Joseph L. Bonneau, Dennis L. Scarnecchia

Journal of the Iowa Academy of Science: JIAS

An experimental rotenone-impregnated pelleted (approximately 10 mg/pellet) bait was tested in force-feeding and field-feeding experiments as a method of control for common carp (Cyprinus carpio). Mortality rates of force-fed fish ranged from less than 40% when fed one pellet to 100% when fed more than 10 pellets. Mortality occurred within 48 h. Mortality rates of control fish did not exceed 10%. In reservoir feeding trials in 1994 and 1995, carp were fed for 2-3 weeks on a non-toxic, vegetable-based bait dispensed by automatic feeders, followed by one feeding of the bait with rotenone added. Carp ceased feeding on the rotenone …


Recent Observations Of The Distribution And Status Of Bluntnose Darters And Crystal Darters In Iowa, Melvin C. Bowler Jan 2001

Recent Observations Of The Distribution And Status Of Bluntnose Darters And Crystal Darters In Iowa, Melvin C. Bowler

Journal of the Iowa Academy of Science: JIAS

The distribution and status of Iowa's fishes were last extensively described in Iowa Fish and Fishing (Harlan et al. 1987). Since then, numerous fish collections have been made in Iowa's interior and bordering rivers and streams. Excluding non-native species, there have been three documented accounts of new fish species distributional records in Iowa since 1987. In this paper, I describe new collections of crystal darter (Crystallaria asprella) and bluntnose darter (Etheostoma chlorosomum) from the Mississippi River. The first documented specimen of C. asprella in Iowa was collected in Pool 11 of the Upper Mississippi River (UMR) in 1995. One specimen …


Tillage Effect On Soil Water Content And Soybean (Glycine Max) Yield In A Strip Intercropping System, M. Ghaffarzadeh, F. Garcia Prechac, M. M. Harbur, R. M. Cruse Jan 2001

Tillage Effect On Soil Water Content And Soybean (Glycine Max) Yield In A Strip Intercropping System, M. Ghaffarzadeh, F. Garcia Prechac, M. M. Harbur, R. M. Cruse

Journal of the Iowa Academy of Science: JIAS

Soybean [Glycine max (L.) Merr.] response to strip-intercropping with corn (Zea may L.) and oat (Avena Jativa L.) interseeded with nondormant alfalfa (Medicago Jativa L.) may be affected by soil moisture. A three-crop strip-intercropping system of corn, soybean and oat interseeded with nondormant alfalfa was established to determine the effect of tillage system and row position on soil water content and grain yield in the soybean strip. The experiment was a split-plot design with three tillage treatments (conventional, CT; reduced, RT; and minimum tillage, MT) as main plot effects and three row positions (both edge rows and the center …


Back Cover Jan 2001

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Duane Isely (1918-2000): A Tribute, Stanley L. Welsh, Deborah Q. Lewis Jan 2001

Duane Isely (1918-2000): A Tribute, Stanley L. Welsh, Deborah Q. Lewis

Journal of the Iowa Academy of Science: JIAS

Duane Isely, Distinguished Professor Emeritus, Department of Botany, Iowa State University, Ames, Iowa, died on 6 December 2000. Dr. Isely was an outstanding plant taxonomist with expertise in other fields as well, especially in seed technology and weed identification and control. He was born in Bentonville, Arkansas, on 24 October 1918 into a family of academicians. His father, Dwight Isely, was professor and later Dean of Agriculture at the University of Arkansas, and his mother, Blessie Elise Dort Isely, also taught at the University of Arkansas and eventually received her Ph.D.


Editorial Board & Iowa Academy Of Science Officers And Directors Jan 2001

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Identification And Distribution Of The Treefrogs Hyla Versicolor And Hyla Chrysoscelis In Iowa, Catherine E. C. Oberfoell, James L. Christiansen Jan 2001

Identification And Distribution Of The Treefrogs Hyla Versicolor And Hyla Chrysoscelis In Iowa, Catherine E. C. Oberfoell, James L. Christiansen

Journal of the Iowa Academy of Science: JIAS

Historically, the tetraploid and diploid species pair of gray treefrogs, Hyla versicolor and Hyla chrysoscelis, were mapped collectively in Iowa because no macroscopic morphological characteristics useful in recognizing the two species had been found. The present study reports identification and separation of the species by counts of nucleoli in the palpebral membrane of the eye and by measurement of scanning electron micrographs of toepad epithelial projections. Subsequent morphometric data confirm that the two species are morphologically distinct in Iowa but that overlap in characters continues to make macroscopic morphology unreliable for identifying individuals. H. chrysoscelis is distributed sporadically though all …


Awards And Recognition, Iowa Academy Of Science, 2001 Jan 2001

Awards And Recognition, Iowa Academy Of Science, 2001

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Iowa Academy Of Science Membership Directory, 2001-2002, Iowa Academy Of Science Jan 2001

Iowa Academy Of Science Membership Directory, 2001-2002, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Editorial Board, Journal ... 5
Committees ... 6
Sections ... 14
ISTS Regional Directors ... 18
Awards of Merit ... 20
Excellence in Science Teaching Awards ... 21
Past Presidents ... 22
Membership Roster ... 23
Institutional Members ... 23
Corporate Sponsors ... 60