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Articles 3601 - 3630 of 4995
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Frogs: Living Tools Of Science, Roger Volker
Frogs: Living Tools Of Science, Roger Volker
Iowa Science Teachers Journal
The lowly frog has long been the biologist's friend. As a small vertebrate available in large numbers, this amphibian has been made the high point of every biology class across the country, since the turn of the century.
News And Notes - New Members?
Iowa Science Teachers Journal
ISTA can still use more members! Have you done your job in locating one more professionally minded science teacher in Iowa?
News And Notes - Short-Course A Success
News And Notes - Short-Course A Success
Iowa Science Teachers Journal
About 500 Iowa science teachers were involved with the ISU-ISTA Short-Course on March 6 and 7, 1964.
Review - Chemistry Problems, Floyd Sturtevant
Review - Chemistry Problems, Floyd Sturtevant
Iowa Science Teachers Journal
This is a source book for the above average chemistry student. The teacher of CHEM Study will find this an especially useful reference book.
News And Notes - Annual Short Course For Science Teachers At Iowa State University Planned For March 1964
Iowa Science Teachers Journal
Friday and Saturday, March 6th and 7th, are the dates for the 1964 annual Short Course for Science Teachers to be held at Iowa State University in collaboration with the Iowa Association of Science Teachers. The faculty for the short course will consist of both Iowa State staff members, and off-campus scientists and educators, including a number of outstanding high school science teachers.
Review - Vanishing Animals, Preserving Nature's Rarities, Jean Crane
Review - Vanishing Animals, Preserving Nature's Rarities, Jean Crane
Iowa Science Teachers Journal
This is a book that either scientist or non-scientist might read with interest and profit. Mr. Street covers a wide variety of animals from the great auk to the Komodo dragon.
Developing A Science Curriculum In A Small School, Verlin Fleagle
Developing A Science Curriculum In A Small School, Verlin Fleagle
Iowa Science Teachers Journal
Developing a workable curriculum for a school with a total enrollment of 607, kindergarten through twelfth grade, is not quite as easy as it might seem. Bigger schools have a better systematized core program than most small schools.
The Faculty Chair: Midwest Literature And Poet James Hearst, Loren Taylor
The Faculty Chair: Midwest Literature And Poet James Hearst, Loren Taylor
Midwest: A Literary Review
No abstract provided.
Open Letter From The President, David L. Fagle
Open Letter From The President, David L. Fagle
Iowa Science Teachers Journal
The Iowa Science Teacher's Association is a growing organization and this journal is evidence of its expanding program. All teachers of science in the State of Iowa should be active members of this worthwhile organization.
Reviews - Single Concept Teaching Films, E. Russell Tepaske
Reviews - Single Concept Teaching Films, E. Russell Tepaske
Iowa Science Teachers Journal
Recent materials in science education that will likely affect classroom instruction in all sciences for years to come is the single concept teaching film series of Encyclopedia Britannica Films Inc.
Iowa Geological Survey, H. Garland Hershey
Iowa Geological Survey, H. Garland Hershey
Iowa Science Teachers Journal
It is the duty of the Geological Sur vey to collect, interpret, and on basic geologic features of the State.
Reaction Of Aromatic Amines With Epihalohydrins, Orm Aniline, F. C. Pennington
Reaction Of Aromatic Amines With Epihalohydrins, Orm Aniline, F. C. Pennington
Proceedings of the Iowa Academy of Science
Published procedures for the reaction of primary aromatic amines with epihalohydrins to give 1:1 addition compounds are not generally applicable, and we have found that they frequently lead to impure products. The reactions were investigated in water, alcohol and bromobenzene solutions. A number of techniques were used to follow the reaction. Infrared spectroscopy gave qualitative data since significant changes occur in the 2.5 μ - 3.0 μ and the 10 μ - 11 μ regions of the spectrum. Thin layer chromatography made it possible to detect the formation of by-products and to determine the purity of the addition compounds. The …
Paper Chromatograms Of Body Mucus Of Some Suckers (Family Catostomidae), Gene R. Huntsman
Paper Chromatograms Of Body Mucus Of Some Suckers (Family Catostomidae), Gene R. Huntsman
Proceedings of the Iowa Academy of Science
Phenol:water and butanol:acetic acid:water solvent systems were used with horizontal and descending paper chromatography of the body mucuses of Carpiodes, Catostomus, Ictiobus, Moxostoma, and Hypentelium. Mucus could be sampled in the field, applied to the chromatography paper, allowed to dry, and kept for several days without refrigeration. Chromatograms of fresh and dried mucus appeared the same. Horizontal runs were faster but were abandoned for the greater separation possible with descending techniques. Ninhydrin-stained descending chromatograms showed differences between some genera within a run. Descending chromatograms run in butanol:acetic acid:water and viewed with short wave ultraviolet light showed differences between most genera …
Large Glacial Erratics In Northeast Iowa, Lester P. Engelke
Large Glacial Erratics In Northeast Iowa, Lester P. Engelke
Proceedings of the Iowa Academy of Science
The location of large glacial erratics of gneiss and granite in northeast Iowa, specifically in the tri-county area of Bremer-Fayette-Chickasaw counties is described. Discussed are the possible origin, size, location, detectability on survey photos, and some historical features. Action to provide for protection of these glacial relics against destruction is urged.
Study Of The Frequency Of Color Blindness Among Mentally Retarded Children In The Counties Of Buena Vista, Cherokee, Ida And Sac., Terry L. Penniman
Study Of The Frequency Of Color Blindness Among Mentally Retarded Children In The Counties Of Buena Vista, Cherokee, Ida And Sac., Terry L. Penniman
Proceedings of the Iowa Academy of Science
The study has shown that there is an appreciably greater frequency of defective color vision among the mentally retarded children in the counties specified than that found in normal children. The general objective of this study was to determine the frequency of color blindness among mentally retarded children in an area of northwest Iowa. The subjects were children in fifteen special education classes for the mentally retarded. The Hardy-Rand-Ritter Pseudoisochromatic plates for detecting, classifying, and estimating the degree of defective color vision were used in this study. The author in all cases did the examining.
An Analysis Of Bscs Biology In Use For First Time, George Chapman
An Analysis Of Bscs Biology In Use For First Time, George Chapman
Iowa Science Teachers Journal
An analysis of the use of a particular program should examine the situation as it exists prior to adoption of the program. This is particularly true in an examination of a biology program.
Iowa Science Talent Search, J. D. Woods
Iowa Science Talent Search, J. D. Woods
Iowa Science Teachers Journal
At the meeting of the Iowa Academy of Science to be held April 17, 1964, at Luther College, Decorah, Iowa, seven Iowa high school seniors will be honored as winners of Collins Science Scholarships in the Eighteenth Iowa Science Talent Search.
News And Notes - Iowa To Host Regional Nsta Meeting
News And Notes - Iowa To Host Regional Nsta Meeting
Iowa Science Teachers Journal
Dean C. Stroud of Des Moines is the general chairman of a planning committee for the October 2 and 3, 1964, regional meeting of NSTA which will be held in Des Moines.
Candidates For Office - Iowa Science Teacher's Association
Candidates For Office - Iowa Science Teacher's Association
Iowa Science Teachers Journal
Again this year our officers for the Iowa science Teacher's Association will be elected through mail balloting. In order that you, as a voting member, may better know our candidates and thus be adequately informed to make your choices, we are including the following roster.
Midwest, Volume 7, Number 1, Spring 1964 [Download Entire Issue]
Midwest, Volume 7, Number 1, Spring 1964 [Download Entire Issue]
Midwest: A Literary Review
No abstract provided.
Bar Press Behavior Reinforced By Pup Retrieval, N. F. Viemeister, J. Pierce, D. W. Tyler
Bar Press Behavior Reinforced By Pup Retrieval, N. F. Viemeister, J. Pierce, D. W. Tyler
Proceedings of the Iowa Academy of Science
A method was developed to test the reinforcing effects of pup retrieval on the behavior of lactating female rats. A modified bar press chamber was employed. One section of the chamber served as the nest area for the mother and young. The female was taught to bar press in order to be admitted to a retrieving area containing a pup which the female could retrieve and return to the nest. The results indicated that high and sustained rates of bar pressing could he obtained using pup retrieval as the reinforcing event. The data obtained using this method were discussed in …
Notes On Iowa Ants, R. L. King, R. M. Sallee
Notes On Iowa Ants, R. L. King, R. M. Sallee
Proceedings of the Iowa Academy of Science
Data are presented for 19 years (1945-1963 inclusive), and include collections of Formica rubicunda, Formica spatulata, Formica reflexa and Polyergus rufescens breviceps. Included also is information on longevity records and additional slave species (Formica ravida and Formica spatulata slaves with Formica rubicunda).
Observations On The Morphology And Life History Of Oswaldocruzia Sp. In Frogs, B. T. Ridgeway
Observations On The Morphology And Life History Of Oswaldocruzia Sp. In Frogs, B. T. Ridgeway
Proceedings of the Iowa Academy of Science
A series of experiments were instituted in order to clarify the life history of Oswaldocruzia sp., a nematode of frogs. Suitable hosts were collected and examined for the nematode. Artificial infection of laboratory reared frog tadpoles and young frogs by use of incubated juvenile stages of the parasite was undertaken with negative results. Several reasons are suggested to explain failure of infection attempts. The likelihood that juvenile Oswaldocruzia used experimentally were not infective stages of the parasite is suggested. Morphological characters of the worms support this idea. The possibility that tadpoles and young frogs are refractory to infection, and involvement …
Some Matters Of Concern In The County Conservation Program In Iowa, With Special Reference To Land Use, J. Harold Ennis
Some Matters Of Concern In The County Conservation Program In Iowa, With Special Reference To Land Use, J. Harold Ennis
Proceedings of the Iowa Academy of Science
Eighty-three of Iowa's 99 counties have established County Conservation Boards. County park areas, river access sites, wildlife areas and roadside parks in that order lead the list in numbers developed to date. Polk, Linn, and Black Hawk counties lead the list in area available with 2544, 2275, and 1952 acres respectively. Special safeguards are urged for administration of lands preserved for scientific purposes.
Dispersal Related To Density In The Amphipods Hyalella Azteca And Gammarus Pseudolimnaeus, Philip T. Clampitt
Dispersal Related To Density In The Amphipods Hyalella Azteca And Gammarus Pseudolimnaeus, Philip T. Clampitt
Proceedings of the Iowa Academy of Science
The relationship between population density and rate of dispersal and tendency to aggregate in two species of fresh-water amphipods, Hyalella azteca (Saussure) and Cammarus pseudolimnaeus Bousfield, was tested by laboratory experiment. Populations of H. azteca showed an inverse relationship between initial density and dispersal rate; this relationship is a function of the tendency of populations of higher densities to form aggregations. The dispersal rate of G. pseudolimnaeus was not appreciably affected by changes in population density, and increased density did not result in aggregation. Both species aggregated around vegetation in preference to aggregation around other amphipods. The non-aggressive behavior and …
News And Notes - Spring Meeting Of Ista
News And Notes - Spring Meeting Of Ista
Iowa Science Teachers Journal
On April 17 and 18, 1964, ISTA will meet at Luther College in Decorah as the Science Teaching Section of the Iowa Academy of Science.
News And Notes - Junior Academy To Meet
News And Notes - Junior Academy To Meet
Iowa Science Teachers Journal
The Iowa Junior Academy of Science will meet with the Iowa Academy of Science on April 18, 1964, in Decorah. Mr. Frank Starr of East High School in Waterloo reports that plans for a reorganized state meeting are nearly complete.
Collection And Culture Of Lower Animal Forms, Cameron L. Christensen
Collection And Culture Of Lower Animal Forms, Cameron L. Christensen
Iowa Science Teachers Journal
The trend in secondary biology is to use living material in so far as it is possible. Biology instruction, as it has advanced beyond the descriptive level, has included more projects requiring living animals. The local collecting and culturing of some of these organisms adds just that much more biological experience to the course.
Experimentally Induced Mammary Tumors In Swiss Mice With Cephalobus (Nematoda Cephalobidae), Robert C. Goss, Robert Stevens
Experimentally Induced Mammary Tumors In Swiss Mice With Cephalobus (Nematoda Cephalobidae), Robert C. Goss, Robert Stevens
Proceedings of the Iowa Academy of Science
Mammary tumors developed when 7-month-old Swiss-Webster female mice were subcutaneously injected with nematodes in the dorsal frontal area of mammary tissue. Reactions observed were loss of vibrissae (47%), development of tumors (24%) and death (10%). Loss of vibrissae occurred within 1 or 2 weeks after the third injection. Tumors developed between the seventh and tenth week. No animal developed multiple tumors involving different regions of the body nor did spontaneous tumor regression occur.