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University of Northern Iowa

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Articles 2581 - 2610 of 4046

Full-Text Articles in Science and Mathematics Education

Large-Scale Industrial Applications Of Solar Energy, W. C. Dickinson Jan 1977

Large-Scale Industrial Applications Of Solar Energy, W. C. Dickinson

Iowa Science Teachers Journal

Research on solar energy sponsored by the U.S. Research and Development Administration (ERDA), at the Lawrence Livermore Laboratory, has concentrated on finding and developing techniques that can be made economically competitive with fossil fuels and can be applied by industry on a large scale. The difficulty lies in making solar energy competitive, not in identifying large-scale application. Table 1 suggests the widespread need for large-scale applications.

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A Solar Water Heater, John Bridgenell Jan 1977

A Solar Water Heater, John Bridgenell

Iowa Science Teachers Journal

The sketch (Fig. 1) and photograph (Fig. 2) show a very simple solar water heater made from readily available parts.

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Energy Jan 1977

Energy

Iowa Science Teachers Journal

If energy was delivered to your door like milk -- today, you would have had 19 half gallons of oil, 14 half gallons of natural gas, and 46 pounds of coal on your doorstep.

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Aging Iowa Trees, Roger Q. Landers Jan 1977

Aging Iowa Trees, Roger Q. Landers

Iowa Science Teachers Journal

How old is this tree? Or that one? Unanswerable questions to most people, unless they are there when it started growing, but with proper techniques, equipment, and a bit of skill (or luck), it is not so difficult to determine the age of a tree. Because trees grow in girth by the addition, each year, of a layer of wood just inside the inner bark, these layers can be counted when they are clearly exposed. We usually see the layers exposed as rings on the surface of a stump, hence the study of aging trees is referred to as "tree-ring" …

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Iowa Landforms Jan 1977

Iowa Landforms

Iowa Science Teachers Journal

A new publication, A Regional Guide to Iowa Landforms, is now available as the Iowa Geological Survey Educational Series 3.

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Eighteen Years Of The Hawkeye Science Fair, Dean Stroud Jan 1977

Eighteen Years Of The Hawkeye Science Fair, Dean Stroud

Iowa Science Teachers Journal

Pre-planning for the first Hawkeye Science Fair began in 1958 when representatives of the Iowa Medical Society, the Des Moines Register and Tribune Co., and Drake University met to discuss the feasibility of organizing to sponsor a science fair. Later, the Scanlon Medical Foundation was added to the list of sponsors. The first fair was held in the spring of 1959.

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© Copyright 1977 By The Iowa Academy Of Science Jan 1977

© Copyright 1977 By The Iowa Academy Of Science

Iowa Science Teachers Journal

The American Chemical Society and the National Science Teachers Association have been constructing, standardizing and disseminating examinations in high school chemistry since 1953.

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Purebred?, Wilmer J. Miller Jan 1977

Purebred?, Wilmer J. Miller

Iowa Science Teachers Journal

A notion of "purity" and connotations of cleanliness, neatness, stability, uniformity, worthiness and admirable values click through our mental processes. After all, that's what we learn in biology, especially the genetic section, don't we? Well, maybe it's colored a bit by the horticulturalists' and stock breeders' influence, and dog and cat fanciers who want pedigree papers and conformity to some arbitrary standard. Poultry and small pet fanciers have about the same attitude, but rely less on papers. But "purebred" is jargon--at worst meaningless in the context of conflicting usages, and contemptuous in use by a more sophisticated group--breeders or teachers …

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Chem Ed 77 Jan 1977

Chem Ed 77

Iowa Science Teachers Journal

CHEM ED 77 is a conference for classroom chemistry teachers to be held 22-25 August, 1977, at the University of Waterloo, Waterloo, Ontario, Canada.

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The Metric System Jan 1977

The Metric System

Iowa Science Teachers Journal

An informational fact sheet, Metric Units for Everyday Use, is free upon request from the U.S. Metric Association.

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Bioassay And Corn Coleoptiles, S. Lane Wilson Jan 1977

Bioassay And Corn Coleoptiles, S. Lane Wilson

Iowa Science Teachers Journal

In the 1930s, Dr. F. W. Went and R. Bonner conducted investigations into the factors regulating cell elongation in plants and their subsequent effect on plant growth. These studies eventually led to the isolation of a plant growth hormone called auxin. Auxin was finally identified chemically as indole-3-acetic acid or IAA.

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More Snow Jobs, Paul Joslin Jan 1977

More Snow Jobs, Paul Joslin

Iowa Science Teachers Journal

On the first day of snow, when the attention of children is obviously distracted from normal classroom procedures, have them bundle up and go outside. Once outside, have the students follow you in a line and form a circular path. You can then use the circle formed in the snow, to teach or review concepts associated with motion, time, direction, fractions and geometry.

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Officers, Iowa Academy Of Science; Officers, Editors, Regional Directors, Iowa Science Teachers Section; Advisory & Technical Review Boards Jan 1977

Officers, Iowa Academy Of Science; Officers, Editors, Regional Directors, Iowa Science Teachers Section; Advisory & Technical Review Boards

Iowa Science Teachers Journal

No abstract provided.

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New Istj Associate Editors Jan 1977

New Istj Associate Editors

Iowa Science Teachers Journal

Three Associate Editors have been selected by the Iowa Science Teachers Journal's Advisory Board. Gary Downs, of Ames, has agreed to serve as Associate Editor in Elementary Science Education. Tom Scott, of Des Moines, has agreed to serve as Associate Editor in Junior High Science Education. Darrel Hoff, of Cedar Falls, has agreed to serve as Associate Editor in Earth Science Education.

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Iowa Plan For The Statewide Use Of The Computer For Education, Dean D. Crocker Jan 1977

Iowa Plan For The Statewide Use Of The Computer For Education, Dean D. Crocker

Iowa Science Teachers Journal

The timely information now available in the application of high speed computer techniques to education may benefit students, school administrators, supervisors and other decision makers alike. Science teachers and students may find assistance through the use of instructional and career guidance applications. Education administrators, supervisors, teachers and other community and state planners can benefit by using the available data in projecting alternative solutions for critical planning issues.

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Freedom!, W. T. Lippincott Jan 1977

Freedom!, W. T. Lippincott

Iowa Science Teachers Journal

Just about the easiest thing we could do these days is to give in to student demands that they be taught according to their own standards, needs, and perceptions, and in ways that will least interfere with their life style.

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Two New Nsta Publications Jan 1977

Two New Nsta Publications

Iowa Science Teachers Journal

The following publications were introduced at the 25th Annual National Science Teachers Association's Convention.

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Are Young People More Intelligent Than Older People? Jan 1977

Are Young People More Intelligent Than Older People?

Iowa Science Teachers Journal

The brain of a ninety-year old may consist of only two-thirds the number of cells found in that of a twenty-year old.

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Honors To Iowans, Dave Fagle Jan 1977

Honors To Iowans, Dave Fagle

Iowa Science Teachers Journal

Two Iowa science educators (Sondra Waltz and Robert Yager) recently received honors at the National Convention of the National Science Teachers Association held during March, 1977, at Cincinnati, Ohio. These honors were bestowed upon the recipients because of their excellence in teaching and distinguished professional leadership.

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Spotlighting Excellence, Dave Mccalley Jan 1977

Spotlighting Excellence, Dave Mccalley

Iowa Science Teachers Journal

This article begins a continuing series of personal sketches concerning recipients of the annual Iowa Academy of Science Excellence in Science Teaching Awards. In this article, the recipients of the awards in biology and elementary science teaching, Owen Primavera and Diana Brill, will be featured.

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Investigating Iowa's Weeds, Paul G. Jantzen Jan 1977

Investigating Iowa's Weeds, Paul G. Jantzen

Iowa Science Teachers Journal

The term "weed" is often defined as a plant out of place. A. C. Martin has complained that this definition reflects human bias and that pest plants are out of place only with respect to man's immediate purpose. In nature's scheme, they often serve useful functions such as providing food for wildlife throughout the growing season and covering barren soil, thus preventing soil erosion. Judging from their competitive success with many so-called desirable species, they are anything but out of place.

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Thomas Edison Jan 1977

Thomas Edison

Iowa Science Teachers Journal

Thomas Edison successfully produced rubber from goldenrod.

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Ias-Aaas Incremental Investigative Grants For High School Students, Lynn W. Glass Jan 1977

Ias-Aaas Incremental Investigative Grants For High School Students, Lynn W. Glass

Iowa Science Teachers Journal

In an attempt to encourage Iowa high schools to provide support for investigative science activities, the Iowa Academy of Science, with the financial support of the American Association for the Advancement of Science, has created an Incremental Investigative Grant Program. These grants, beginning with the current school year, are available for appropriate scientific investigative activities by high school students working under the sponsorship of a science teacher.

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Intelligent Zinc Jan 1977

Intelligent Zinc

Iowa Science Teachers Journal

Recently, Professor Adon A. Gordus of the University of Michigan has been directing a study of more than 800 well-documented hair samples. Using atomic absorption spectroscopy and neutron activation, his study has uncovered some interesting correlations between academic performance and trace metal content of hair.

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The Anti-Science Syndrome, Arthur Koestler Jan 1977

The Anti-Science Syndrome, Arthur Koestler

Iowa Science Teachers Journal

The average person will be reluctant to admit that a work of art is beyond his level of comprehension; but he will, in the same breath and with certain pride, confess his complete ignorance of the principles which make his radio work.

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Patriotic Phenolphtalein, Joe Moore Jan 1977

Patriotic Phenolphtalein, Joe Moore

Iowa Science Teachers Journal

To illustrate the "patriotic nature" of phenolphthalein, prepare a dilute solution by dissolving 0.1 gm of phenolphthalein in 100 ml of ethyl alcohol and dilute with 50 ml of water.

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Will It Work In Iowa? Jan 1977

Will It Work In Iowa?

Iowa Science Teachers Journal

The embankments of many Austrian highways today show on both sides of the road a new installation: game-warning reflectors which are designed to divert beams from car headlamps into the adjoining countryside. The basic idea for the installation of the reflectors has been derived from the studies of the Institute of Comparative Behavior Research in the Austrian Academy of Sciences, which concentrated on the effect on animals of "eyes" and "eye dummies."

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Officers, Iowa Academy Of Science; Editorial Staff ; Officers & Regional Directors, Iowa Science Teachers Section; Advisory & Technical Review Boards Jan 1977

Officers, Iowa Academy Of Science; Editorial Staff ; Officers & Regional Directors, Iowa Science Teachers Section; Advisory & Technical Review Boards

Iowa Science Teachers Journal

No abstract provided.

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Solar Energy Society Of America Jan 1977

Solar Energy Society Of America

Iowa Science Teachers Journal

The Solar Energy Society of America and its publication Energies is dedicated to a broad scope of information and education in solar energy and related energy concerns and realities.

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Plant Growth Hormones Jan 1977

Plant Growth Hormones

Iowa Science Teachers Journal

The farmer of the future may one day spray chemicals that would simultaneously increase growth of specific crops while killing competing weeds, according to Dr. Robert Bandurski of Michigan State University.

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