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Articles 1711 - 1740 of 2306
Full-Text Articles in Science and Mathematics Education
Science For Students Today And Tomorrow, Robert E. Yager
Science For Students Today And Tomorrow, Robert E. Yager
Iowa Science Teachers Journal
Teaching science as a body of peculiar knowledge which exists for students to learn is still a common approach in American secondary schools. This is true today even with the so-called "new" science programs and their added impetus to the idea of teaching and emphasizing the processes of science in addition to the traditional content of a given discipline. The last ten years have seen great advances. However, much more is needed before we can talk of science in in our schools that is relevant for students both presently and in the future. We have too often accepted new ideas …
Rock And Mineral Exchange Service
Rock And Mineral Exchange Service
Iowa Science Teachers Journal
Elementary and Secondary school science teachers interested in swapping rocks, minerals, and other earth science materials are hereby notified that a clearinghouse for earth science materials exchange has been established in Arlington Heights, Illinois.
Conservation And The Biology Teacher, M. E. Stempel
Conservation And The Biology Teacher, M. E. Stempel
Iowa Science Teachers Journal
Conservation practices are based on a need to retain the best features of soils, plants, and animals. These are the raw materials of commerce. Commercialization has accelerated until most land areas are now exploited.
Instructional Aid On Chromatography Available
Instructional Aid On Chromatography Available
Iowa Science Teachers Journal
"How to Use Chromatography as a Science Teaching Aid," by Frank M. Ganis, Chairman, Department of Biochemistry, School of Dentistry, University of Maryland, Baltimore, outlines five procedures to separate mixtures of chemical substances. Each method stresses a new aspect of chromatography, progressing from simple to more complex techniques.
The Imbalance Of Nature, Chalmer J. Roy
The Imbalance Of Nature, Chalmer J. Roy
Iowa Science Teachers Journal
On this fantastically dynamic planet, what can be the meaning of the balance of nature? The dynamics of the atmosphere, of the oceans, and of the solid earth show no signs of reaching an equilibrium, a condition of no change. Nature does not obey laws. The so-called laws of nature are human constructs, designed to explain observed relationships and phenomena.
Iowa Outdoor Education Center Planned
Iowa Outdoor Education Center Planned
Iowa Science Teachers Journal
Hawkeye Naturama, a proposed recreation center designed to improve outdoor recreation and outdoor education experiences for all of Iowa's citizens as well as out-of-state tourists, is in the initial development stage.
Expected Student Outcomes In Earth Science Investigations, John F. Thompson
Expected Student Outcomes In Earth Science Investigations, John F. Thompson
Iowa Science Teachers Journal
One of the basic precepts in science teaching is the Futility Factor: no laboratory investigation is ever a complete failure . . . it can always serve as a bad example. There will always be some kind of result when students do investigations. Whether the outcome is expected or not is another question. Occasionally in a classroom investigation the "wrong" outcome is the only result. At times like this we doubt the results obtained even by the authors of the investigation.
What Do I Do Now, Teacher?????, Milbert H. Krohn
What Do I Do Now, Teacher?????, Milbert H. Krohn
Iowa Science Teachers Journal
Fifteen years of science fairs has brought me into contact with excitement, danger, success, failure, and freakishness such as never could be known if the spontaneity and creativity of youth had not been challenged. The writer is not sure whether science fairs are necessary or not. Sometimes, after they are over, the justification for another is like hitting yourself on the head with a hammer because it feels so good when you stop. Let's go back, readers, to some things in the past.
Aseptic Culture Of Arabidopsis Thalian: A Flowering Plant That Can Be Handled Like A Microorganism, Sujit K. Dhar
Aseptic Culture Of Arabidopsis Thalian: A Flowering Plant That Can Be Handled Like A Microorganism, Sujit K. Dhar
Iowa Science Teachers Journal
Arabidopsis thaliana (L.) Heynh. belongs to the tribe Arabideae of the Cruciferae. The plant occurs throughout Europe, East Africa, and Northern and Central Asia.
Nabt Convention In Philadelphia In October, 1969
Nabt Convention In Philadelphia In October, 1969
Iowa Science Teachers Journal
The National Association of Biology teachers will hold its national convention in Philadelphia, October 8-11, 1969. The theme of the convention will be "Social Implications of Biological Education."
Physics Is Too For Girls, Floyd D. Goar
Physics Is Too For Girls, Floyd D. Goar
Iowa Science Teachers Journal
For several years there has been concern about the lack of girls in physics classes and, more recently, the lack of boys. The idea for an all-girl class has been in the back of my mind for some time because just watching the few girls in my physics classes each year gave me the impression that they weren't really enjoying themselves.
Nature Of The Antinatriuretic Action Of Growth Hormone, Ronald R. Bach
Nature Of The Antinatriuretic Action Of Growth Hormone, Ronald R. Bach
Iowa Science Teachers Journal
Three interrelated experiments were initiated to study growth hormone's stimulation of urinary sodium retention. First a dose-response curve was determined by administration of known dosages of growth hormone or the vehicle to groups of rats. Urine was collected from four to six hours after administration. In a second experiment, the relationship between time and degree of response to growth hormone was determined. Urine was collected from 0-2, 2-4, 4-6, 6-8, 8-10, 12-14, 16-18, and 20-22 hours after administration. Sodium excretion was not altered in the 0-2 hour collection period. Significant retention took place in both the 2-4 and 4-6 hour …
Complete Teaching Guides On Corrosion With Demonstration Materials
Complete Teaching Guides On Corrosion With Demonstration Materials
Iowa Science Teachers Journal
A solicitation for teaching guides on corrosion provided by the Zinc Institute, Inc.
Cognitive Capacity Of Very Young Children, Jacques Mehler, Thomas G. Bever
Cognitive Capacity Of Very Young Children, Jacques Mehler, Thomas G. Bever
Iowa Science Teachers Journal
Children between 2 years, 6 months old and 3 years, 2 months old correctly discriminate the relative number of objects in two rows; between 3 years, 2 months and 4 years, 6 months they indicate a longer row with fewer objects to have "more"; after 4 years, 6 months they again discriminate correctly. The discriminative ability of the younger children shows that the logical capacity for cognitive operations exists earlier than previously acknowledged.
Cover - Ias & Ists Officers, Directors And Chairpersons - Ist Journal Information - Table Of Contents
Iowa Science Teachers Journal
No abstract provided.
Developing Physics Concepts Through The Process Of Variation, Walter J. Gohman
Developing Physics Concepts Through The Process Of Variation, Walter J. Gohman
Iowa Science Teachers Journal
The present trend in the design of physics courses is to place emphasis on understanding rather than the rote memory of ideas and processes. The development of systematic approaches to direct thought patterns decreases the memory burden. The process of variation provides a universal thought pattern that can be applied in almost all phases of physics. This paper provides a brief description of some selected sample applications. It is hoped that these will illustrate the scope and the merit of this approach.
Preliminary Planning Session For Short Course
Preliminary Planning Session For Short Course
Iowa Science Teachers Journal
Preliminary plans for the Science Teachers' Short Course were discussed at a meeting at Iowa State University, Ames, on December 7, 1968.
Hatching Avian Eggs In The Laboratory, Kashmiri L. Arora
Hatching Avian Eggs In The Laboratory, Kashmiri L. Arora
Iowa Science Teachers Journal
The purpose of this paper is to acquaint researchers and biology teachers with hatchability problems and incubation techniques. While the discussion is primarily devoted to the incubation and hatching of chicken embryos, most of the points will be applicable to other avian species.
Color Centers In Alkali Halides, Allan Holtz
Color Centers In Alkali Halides, Allan Holtz
Iowa Science Teachers Journal
The purpose of this investigation is to examine Schottky defects in alkali-halides. Although they occur in pairs, only the anion vacancies lend themselves to the trapping of electrons. Thus, this project concerns only the anion portion of the Schottky defects.
Open Letter To The Members Of Ists, George F. Chapman
Open Letter To The Members Of Ists, George F. Chapman
Iowa Science Teachers Journal
This year we celebrate the twenty-fifth anniversary of the National Science Teachers Association. Time has seen many changes in science education in the nation and in Iowa. It is for this reason that the regional meetings of ISTS have as their theme "Twenty-five Years of Science Education-The Story of a Revolution."
Science, Engineering, Humanities Symposium Set
Science, Engineering, Humanities Symposium Set
Iowa Science Teachers Journal
The seventh annual U.S. Army-Iowa Science, Engineering, and Humanities Symposium will be held at The University of Iowa, March 6, 7, and 8, under the direction of Dr. Ronald Townsend.
Iowa Section Of Aapt
Iowa Science Teachers Journal
The Annual Spring Meeting of the Iowa Section of the American Association of Physics Teachers will be held on Saturday, April 19, 1969, at the University of Northern Iowa, Cedar Falls.
Instructional Aid On Science Lab Safety
Instructional Aid On Science Lab Safety
Iowa Science Teachers Journal
"How to Provide for Safety in the Science Lab," another in a series of instructional aids prepared by the National Science Teachers Association, provides precautionary pointers for teachers of science laboratories at all levels. The booklet, written by James R. Irving, Consultant to Stansi Scientific Division, Fisher Scientific Company, Chicago, considers safety from the standpoints of physical facilities and the teacher's attitude and preparation.
Nsf Reports On 1967 Industrial Research And Development
Nsf Reports On 1967 Industrial Research And Development
Iowa Science Teachers Journal
Research and development expenditures by industrial firms totaled $16.4 billion in 1967, up 6 per cent from the 1966 level by $15.5 billion, according to a bulletin released by the National Science Foundation.
The Magnitude Of The American Educational Establishment (1968-69)
The Magnitude Of The American Educational Establishment (1968-69)
Iowa Science Teachers Journal
More than 60,400,000 Americans are engaged full-time in the nation's educational enterprise as students, teachers, or administrators. Nearly another 140,000 make education a time-consuming avocation as trustees of local school systems, state boards of education, or institutions of higher learning. The breakdown is given here.
Nsta 1969 Regional Conferences
Nsta 1969 Regional Conferences
Iowa Science Teachers Journal
A list of National Science Teachers Association 1969 conferences.