Science and Mathematics Education Commons^™

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

No Harpoons, Unless . . ., Arnold H. Webster

Iowa Science Teachers Journal

No abstract provided.

Astronomy Bulletin - The 1991 Spring Sky, P. Steven Leiker

Iowa Science Teachers Journal

No abstract provided.

Science Notes - Natural History Potpourri Workshop For Elementary And Middle School Teachers

Iowa Science Teachers Journal

The topics of .trees, prairie plants, birds, pond animals and rocks will be explored via field trips, classroom presentations and application activities during two week-long summer workshops.

Science Notes - Graduate Study Awards Available

Iowa Science Teachers Journal

The College of Natural Science of the University of Northern Iowa has announced the availability of financial awards to pay tuition costs of graduate study in the fields of biology, chemistry, earth science, physics, science and science education during the 1991 summer session.

Science Calendar

Iowa Science Teachers Journal

No abstract provided.

Index To Volume 27

Iowa Science Teachers Journal

No abstract provided.

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Correlation Of Raccoon Pelt Qualities With Age, Sex, And Physical Condition, Travis C. Glenn

Journal of the Iowa Academy of Science: JIAS

Fur harvesters and fur buyers have many intuitive ideas about how raccoons' pelt qualities differ due to age, sex, or physical condition. We tried to demonstrate correlations between age classes (juvenile and adult), sex, and physical condition and the quality of raccoon pelts. Quality of pelts was described in three objective ways: size of the pelt, density of the pelage (primeness), and color of the pelage. Physical condition was measured by kidney fat index (KFI) and skin fat index (SFI). Size of the pelts was correlated with age, sex, and both measures of physical condition. Primeness of the pelts was …

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Rare Iowa Plant Notes From The R. V. Drexler Herbarium, Jeffery C. Nekola

Journal of the Iowa Academy of Science: JIAS

Notes on the distribution, habitats, associated species, and taxonomic considerations for 134 rare Iowa plants are presented. These taxa, including 15 Pteridophytes, 74 Dicots, and 45 Monocots were located during a decade of field research (1979-1989) concentrated in eastern, northeastern, and northwestern Iowa. Included among these are 10 taxa previously unrecorded from the Iowa flora (Carex sterilis, Circaea X intermedia, Cypripedium calceolus var. parviflorum, Lycopodium inundatum, Opuntia macrorhiza, Salix candida X Salix rigida, Salix X clarkei, Solidago uliginosa, Spiranthes ova/is, Viola adunca), and 15 taxa (Angelica atropurpurea, Aristolochia serpentaria, Artemesia frigida, Aster linariifolius, Berula pusilla, Carex conoidea, Eleocharis pauciflora var. …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Impact Of Global Warming And Cooling On Midwestern Agriculture, Louis M. Thompson

Journal of the Iowa Academy of Science: JIAS

The global warming since 1980 has been greater than it was during the warming trend from 1880 to 1940. This has caused concern that the very warm years of 1987 and 1988 might have been associated with greenhouse warming. However, the cooling trend from 1940 to 1980 occurred during a rapid buildup in greenhouse gases in the atmosphere. Although there may have been some greenhouse warming since 1880, the unusual warmth of 1987 and 1988 may have been caused by changes in the temperature of the equatorial Pacific Ocean, and changes in transparency of the atmosphere or ocher phenomena acting …

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Richard Bovbjerg And The Iowa Lakeside Laboratory, Michael J. Lannoo

Journal of the Iowa Academy of Science: JIAS

In the spring of 1977, in Ames, a struggling biology major who had earlier shown some promise was ordered by his advisor: "Go to Lakeside Lab and take Dick Bovbjerg's Aquatic Ecology course." I did and it worked. I've parlayed that early potential into a career. And like so many others I return to Lakeside, the first time to take another course, then to do my Master's research. More recently I come back to teach the Field Vertebrate Zoology course. Likewise, Dick has shifted from mentor to colleague, and we've co-authored a paper (Lannoo and Bovbjerg, 1985). Now, I am …

Climatic Influences On Annual Variations In Water Transparency In Lake West Okoboji, Roger W. Bachmann

Journal of the Iowa Academy of Science: JIAS

Secchi disk transparencies, chlorophyll a concentrations, and total phosphorus concentrations were studied in Lake West Okoboji, Iowa, in the summers of 1971-7 3 and 1987-89. The average summer Secchi disk transparencies varied from a low of 2.5 to a high of 5.5 m during the study. The variations in the transparency of lake West Okoboji from year to year seem to be related to climatic factors such as the amounts of spring precipitation in the watershed and probably reflect changes in the annual inputs of plant nutrients. There is some indication that climatic conditions that cause the period of deep …

Holocene Vegetational Changes In Eastern Iowa, R. G. Baker, C. A. Chumbley, P. M. Witinok, H. K. Kim

Journal of the Iowa Academy of Science: JIAS

Pollen and plant macrofossil analysis from three sites along an east-west transect in southeastern Iowa provide evidence for Holocene vegetational development. Colo Marsh at the west end of the transect is relatively complete, with a late-glacial spruce zone ending about 11,500 yr B.P.; a deciduous forest zone from about 11,500 to 8300; a prairie zone from 8300 to 4500, and prairie with oak from 4500 to presettlement times.

Sediments from the site at the Indian Creek Nature Center, midway in the transect, date only from about 6000 to 1600 yrs B. P. This site also was dominantly prairie from 6000 …

Index For Volume 97

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Instructional Outcomes Change With Sts, Robert E. Yager

Iowa Science Teachers Journal

Ideas and approaches central to Science/Technology/Society (STS) have been introduced via the Chautauqua program in classrooms of nearly 1,000 Iowa teachers of grades 4 through 9 since 1985-86. Assessment of the results of STS instruction has been central to the effort supported by the National Science Teachers Association, the Iowa Utility Association, the National Science Foundation (NSF) and the University of Iowa. Some of the emerging results demonstrate the advantages of an STS focus for school science.

Science Notes - Rare-Earth Stamp Contest

Iowa Science Teachers Journal

How many world-wide postage stamps can you identify that have a direct relationship to rare earth? RIC News, published by the Rare-earth Information Center (RIC) is holding this contest to celebrate its 25th anniversary. The person who identifies the most stamps will be offered the choice of receiving a book or a free year's subscription to the RIC Insight.

Cover - Front Matter - Table Of Contents

Iowa Science Teachers Journal

No abstract provided.

Science Notes - Peregrine Falcon Booklet Available, Stephanie A. Althof

Iowa Science Teachers Journal

The Iowa Department of Natural Resources has released an education kit/booklet titled "Recovering Our Heritage--Peregrine Falcons."

Science Notes - Molecular Biology Enrichment Program For Youths

Iowa Science Teachers Journal

Iowa State University, in cooperation with the National Science Foundation and Eli Lilly and Company, is again sponsoring the Molecular Biology Enrichment for Youth program (MBEY).

Editor's Corner - A Letter To The Editor: National Science Foundation Opportunities For Teachers, Paul D. Jones

Iowa Science Teachers Journal

Hey, Iowa science and math teachers! Are you aware of the many possibilities for study available with National Science Foundation (NSF) funding? Each spring, I browse through the Foundation's catalog of summer programs and apply to the ones that look interesting.

Iowa Academy Of Science Directory, 1990-91: Officers, Committees, And Membership Roster, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Board of Directors ... 5
Program Directors ... 6
Editors ... 7
Committees ... 8
Sections ... 22
Awards of Merit ... 27
Excellence in Science Teaching Awards ... 29
Past Presidents ... 31
Membership List ... 32

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

A Survey Of The Benthic Macroinvertebrates Of The Big Spring Basin, Iowa, Jack O. Kennedy, John G. Miller Iii

Journal of the Iowa Academy of Science: JIAS

Benthic macroinvertebrates were collected in the Big Spring Basin, located in northeastern Iowa, from May through October 1988. The purpose of the study was to develop baseline information on the benthic organisms present in the basin. A total of 167 taxa including seven species of leeches, five genera of snails, three genera of clams, one crayfish genus and over 150 taxa of aquatic insects were identified with the majority of the organisms having been reported in Iowa previously. Benthic organisms not usually encountered in Iowa include the planarian, Cura formanii; the isopod, Lirceus; the beedes, Enrxhrus, Hydrophilus, and llybius; the …