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1989

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Full-Text Articles in Science and Mathematics Education

A Student Handbook For The Environmental Education / Outdoor School Program In The Middle School, Robert Charles Kenck Jr. Jan 1989

A Student Handbook For The Environmental Education / Outdoor School Program In The Middle School, Robert Charles Kenck Jr.

All Graduate Projects

The purpose of this project was to develop a student handbook that can be used from the onset of an environmental study through the inter-active field study. Students will use the handbook as they begin to study environmental education in the classroom. The handbook will continue to be used as each student attends a three day outdoor school to study firsthand their environment through field activities. The handbook will remain the property of the students.


Nebraska Summary: S078 Ford Versatile 276, Nebraska Tractor Test Lab Jan 1989

Nebraska Summary: S078 Ford Versatile 276, 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: S079 Massey Ferguson 390t, Nebraska Tractor Test Lab Jan 1989

Nebraska Summary: S079 Massey Ferguson 390t, 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: S071 Massey Ferguson 253, Nebraska Tractor Test Lab Jan 1989

Nebraska Summary: S071 Massey Ferguson 253, 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 …


The Vascular Flora Of Pilot Knob State Preserve, William C. Watson Jan 1989

The Vascular Flora Of Pilot Knob State Preserve, William C. Watson

Journal of the Iowa Academy of Science: JIAS

Pilot Knob State Preserve is a 365 acre (147 ha) area lying within the boundaries of Pilot Knob State Park. Located in north central Iowa near the northeast corner of Hancock County, this preserve resides on the eastern morainal system of the Des Moines Lobe left from the Wisconsinan glaciation. The vegetation of the preserve is primarily a deciduous woodland on rolling hills interspersed with wetland habitats in the hollows. Iowa's only floating bog is present in one of these hollows and supports numerous vascular plants uncommon to the state. Two species, Carex cephalantha (Bailey) Bickn. and Drosera rotundifolia L., …


Astronomy Bulletin - The 1989 Summer Sky, P. Steven Leiker, Thomas A. Hockey Jan 1989

Astronomy Bulletin - The 1989 Summer Sky, P. Steven Leiker, Thomas A. Hockey

Iowa Science Teachers Journal

No abstract provided.


1988-89 Annual Report, Illinois' Investment, Illinois Mathematics And Science Academy Jan 1989

1988-89 Annual Report, Illinois' Investment, Illinois Mathematics And Science Academy

Annual Reports

With your support, the Illinois Mathematics and Science Academy forged new paths in 1988-89, resulting in another banner year. In looking back and reflecting on the many highlights and achievements, I invite you to join me in celebrating the Academy as a symbol of our state's belief in and commitment to the potential of youth.


Test 1627: John Deere 4255 Quadrange Diesel 16-Speed, Nebraska Tractor Test Lab Jan 1989

Test 1627: John Deere 4255 Quadrange Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE

General

Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure.

The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …


Test 1631: John Deere 8760 Powershift Diesel 12-Speed, Nebraska Tractor Test Lab Jan 1989

Test 1631: John Deere 8760 Powershift Diesel 12-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …


Test 1632: John Deere 8960 Powershift Diesel 12-Speed, Nebraska Tractor Test Lab Jan 1989

Test 1632: John Deere 8960 Powershift Diesel 12-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …


Test 1634: Deutz-Allis 9170 Diesel 18-Speed, Nebraska Tractor Test Lab Jan 1989

Test 1634: Deutz-Allis 9170 Diesel 18-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …


Nebraska Summary: S075 Case-Ih 5120, Nebraska Tractor Test Lab Jan 1989

Nebraska Summary: S075 Case-Ih 5120, 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: S074 Case-Ih 1896, Nebraska Tractor Test Lab Jan 1989

Nebraska Summary: S074 Case-Ih 1896, 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: S072 Massey Ferguson 3680, Nebraska Tractor Test Lab Jan 1989

Nebraska Summary: S072 Massey Ferguson 3680, 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 1633: Deutz-Allis 9150 Diesel 18-Speed, Nebraska Tractor Test Lab Jan 1989

Test 1633: Deutz-Allis 9150 Diesel 18-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …


Test 1635: Deutz-Allis 9190 Diesel 18-Speed, Nebraska Tractor Test Lab Jan 1989

Test 1635: Deutz-Allis 9190 Diesel 18-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …


Synthesis And Antibacterial Studies Of Some 2-Furanthiocarboxyhydrazones, Xiaorong Li, Zoumin Sun, James C. Chang Jan 1989

Synthesis And Antibacterial Studies Of Some 2-Furanthiocarboxyhydrazones, Xiaorong Li, Zoumin Sun, James C. Chang

Journal of the Iowa Academy of Science: JIAS

Seven 2-furanthiocarboxyhydrazones were prepared, 5-nitro-furaldehyde-2-furanthiocarboxyhydrazone from the reaction of 2-furanthiocarboxyhydrazide with 5-nitro-2-furaldiacetate and the others from the condensation of 2-furanthiocarboxyhydrazide with aldehydes: 2- furaldehyde, benzaldehyde, p-hydroxybenzaldehyde, o-methoxybenzaldehyde, o-vanillin, and salicylaldehyde. The seven 2-furanthiocarboxyhydrazones were tested for their antibacterial activities against Staphyloccocus aureus and Bacillus subtilis. 5-Nitro-2-furaldehyde-2- furanthiocarboxyhydrazone was found to display the strongest bacterotoxicity.


Iowa Geology: The Early Years, Wayne I. Anderson Jan 1989

Iowa Geology: The Early Years, Wayne I. Anderson

Journal of the Iowa Academy of Science: JIAS

In 1975 on the occasion of the first one hundred years of the Iowa Academy of Science, Robert W. Hanson summarized the history of the organization. Additional historical accounts covering many of the science disciplines were published during the centennial year. Although geology was not treated separately in these special articles, the contributions of early geologists were important to the development of science in our state. Consequently, it is appropriate to consider the contributions of early geologists in Iowa in celebration of the one hundredth annual meeting of the Iowa Academy of Science. Included in the present report are the …


Astronomy News & Resources, P. Steven Leiker, Thomas A. Hockey Jan 1989

Astronomy News & Resources, P. Steven Leiker, Thomas A. Hockey

Iowa Science Teachers Journal

Most of us have at one time or another in our lives seen a meteor, or "shooting star," on a clear night. This phenomenon usually appears as a brief streak of light in the sky. A meteor occurs when a tiny meteoroid intercepts the Earth's atmosphere and meets a fiery destruction due to the tremendous friction it encounters.


Astronomy Resources, P. Steven Leiker, Thomas A. Hockey Jan 1989

Astronomy Resources, P. Steven Leiker, Thomas A. Hockey

Iowa Science Teachers Journal

"The locus of points such that the sum of the distances between each point and two other fixed focii is constant." This definition of the ellipse, that figure from geometry so important to the understanding planetary and stellar orbits, may be familiar, yet it often remains confusing. We find that creating an ellipse in front of a class as we discuss its features helps to clarify this mathematical definition.


Astronomy Bulletin - The 1989-90 Winter Sky, P. Steven Leiker, Thomas A. Hockey Jan 1989

Astronomy Bulletin - The 1989-90 Winter Sky, P. Steven Leiker, Thomas A. Hockey

Iowa Science Teachers Journal

No abstract provided.


Astronomy News, P. Steven Leiker, Thomas A. Hockey Jan 1989

Astronomy News, P. Steven Leiker, Thomas A. Hockey

Iowa Science Teachers Journal

On September 30, 1989, astronomers from across the state gathered in Ames to attend the Iowa Astronomy Convention. Sponsored by state astronomy organizations, the convention brought together astronomy professionals, teachers and hobbyists for the first of what is intended to be an annual event.


Astronomy Resources, Thomas Hockey Jan 1989

Astronomy Resources, Thomas Hockey

Iowa Science Teachers Journal

The scale of the solar system is often demonstrated by having students stand at appropriate distances away from one another in order to represent the planets' average distances from the Sun. At any practical representative scale, however, the physical diameters of the planets cannot be shown at the same time.


The Relationship Between Home Environment And Ninth-Grade Students' Mathematics Achievement, Brenda B. Campbell Jan 1989

The Relationship Between Home Environment And Ninth-Grade Students' Mathematics Achievement, Brenda B. Campbell

Theses and Dissertations

One hundred thirty-five ninth-grade students served as subjects for this study on the relationship between home environment and mathematics achievement. Each student was given a score on a home-environment questionnaire which was recorded with the student's score on the mathematics section of the Iowa Tests of Basic Skills. To determine the relationship between home environment and mathematics achievement the Pearson product moment correlation coefficient were computed, There was a positive correlation between home environment and mathematics achievement, significant at the ,01 level for all students, for male students, for female students, and for black students. The correlation coefficient was significant …


An Analysis Of Agressive Interactions Between Procambarus Spiculifer And Procambarus Versutus In Laboratory-Based Interspecific Contacts, Lyle A. Brasfield Jan 1989

An Analysis Of Agressive Interactions Between Procambarus Spiculifer And Procambarus Versutus In Laboratory-Based Interspecific Contacts, Lyle A. Brasfield

Theses and Dissertations

The study was undertaken to investigate the role of competitive behavior in the distribution of the crayfish Procambarus spicullfer and Procambarus versutus. Forty pairs of animals, one of each species per pair, were matched by size and gender. For each pair, four fifteen minute agonistic encounters were observed under controlled laboratory conditions, and winners were determined using a scoring system developed by the author. P. versutus won 26 of 40 contests. Chi Square analysis revealed that this outcome deviated from an expected 50/50 ratio at the .942 significance level, suggesting support for the hypothesis that no difference exists in competitive …


Differences In The. Reading And Mathematics Achievement Between Asian American And Non Asian American Children, Linda B. Price Jan 1989

Differences In The. Reading And Mathematics Achievement Between Asian American And Non Asian American Children, Linda B. Price

Theses and Dissertations

Explanations for the achievement or overachievement of Asian Americans are often conflicting and subject to debate among researchers. Four major theories for this achievement are explored in the review of literature. One of these theories concerns the idea that Asian American's beliefs are the result of Confucianism and its influence on the lives of Asian Americans. Another theory examines the parent's positive attitude toward education and its influence on achievement. A third theory suggests that Asian American babies are more alert and sensitive at birth. The final theory examined proposes that the Asian American immigration to the United States is …


Differences Between The High School Grade Point Average And The Sat Mathematics Score In Predicting Success In The Three-Quarter Mathematics Sequence At A Post-Secondary Vocational Education Institution, Steve A. Hicks Jan 1989

Differences Between The High School Grade Point Average And The Sat Mathematics Score In Predicting Success In The Three-Quarter Mathematics Sequence At A Post-Secondary Vocational Education Institution, Steve A. Hicks

Theses and Dissertations

Thirty-seven current and former Engineering Technology students at a postsecondary vocational education institution were used as subjects for a comparison of the high school grade point average and the SAT mathematics score as predictors of success in the three-quarter mathematics sequence during the first year of the two-year program: The Pearson Product-Moment Correlation was used to compute two correlation coefficients; one between the high school GPA and the mathematics sequence average, and the other between the SAT mathematics score and the mathematics sequence average. These correlation coefficients were then compared, using a z calculation, to determine that the difference between …


An Original Formula That Produces Polynomial Functions With Integral Critical Points And Zeros. Will The Classroom Teacher Use It?, Roy C. Gregory Jan 1989

An Original Formula That Produces Polynomial Functions With Integral Critical Points And Zeros. Will The Classroom Teacher Use It?, Roy C. Gregory

Theses and Dissertations

The author of this paper presents an original formula for creating polynomial functions with integral critical points and Integral zeros. This formula provides quickly constructed polynomial functions needed for teaching graphing techniques at the high school level. These functions have the characteristic that both coordinates of each critical point and each zero are integers, which simplifies graphing. A group of one hundred twenty high school mathematics teachers were sent questionnaires to determine if high school teachers would use the formula. Of the fifty-two respondents; twenty-six responded that they would use the formula; twenty-six responded that they may use the formula …


Effects Of New Science Textbooks On Selected Sixth And Eighth Grade Students At Crestwood Elementary School, Paris, Illinois, David R. Pruim Jan 1989

Effects Of New Science Textbooks On Selected Sixth And Eighth Grade Students At Crestwood Elementary School, Paris, Illinois, David R. Pruim

Masters Theses

This paper describes the results of a six-month field study to determine the effects of a newly adopted and implemented junior-high level science textbook series on student achievement. This study took place in the sixth, seventh, and eighth grade science classrooms of Crestwood Elementary School, Paris, Illinois, from December 1988, until May of 1989. This study compared the science achievement of two groups of students in both their sixth and eighth grade years. The Normal Curve Equivalents or NCE's and letter grades as given by the junior-high level science teachers at Crestwood, were analyzed using non-independent t tests. Descriptive data …