Education Commons^™

Man Or Mouse?

Iowa Science Teachers Journal

When testing a new compound (Chlorfenvinphos) for killing ectoparasites on dogs, Vernon Brown of the Shell Toxicology Lab in England found the LD50 differences between species to be enormous. For rats, the LD50 value was 12 mg per kilogram of ordinary feed, for mice 100-200 mg, while dogs proved indestructible at 12,000 mg.

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

Iowa Science Teachers Journal

No abstract provided.

Human Evolution, Robert D. Seager

Iowa Science Teachers Journal

A common characteristic of humans is a desire to know their roots. This is evident not only in the tracing of family ancestries, but in the excitement about and attention given to the study of the roots of our entire species - the study of human evolution. We have, over the past few million years, evolved from an ape-like ancestor to modern Homo sapiens. Like evolution in general, the fact of human evolution is as firmly established as anything in science. There are, however, differences among scientists concerning details of this process. In this paper I will give an historical …

Teaching Nuclear Issues

Iowa Science Teachers Journal

The Nuclear Information and Resource Service has just published several new publications designed to help educators teach about nuclear weapons and nuclear power.

Human Skin Temperature And Biological Clocks: A Laboratory Exercise For Physiology Students, K. A. Langley, G. E. Folk Jr.

Iowa Science Teachers Journal

A simple laboratory experiment is described, consisting of taking the mean temperature between two fingers of human subjects. The results from comparing male and female students is presented. The change in skin temperature over four hours is documented, to demonstrate the importance of doing standardized experiments at the same time of day.

Diatoms (Part V): Ecology, James Hungerford

Iowa Science Teachers Journal

Diatoms are found in a wide variety of habitats. Fossil evidence suggests that diatoms are of relatively recent geologic origin in comparison to other algal groups. The oldest known fossil specimens come from the Jurassic Period (Vinyard 1979). Centric diatoms are predominant in the more ancient strata and also are the predominant forms in present day oceans (Vinyard 1979). Fossil diatoms are used to locate oil strata and water strata, to record the movement of glaciers and to reconstruct paleoecological environments.

Energy Crunch

Iowa Science Teachers Journal

Chop up some spinach, throw in some fat, add water, sunlight and a few other chemicals, and you may end up with a recipe for easing the energy crunch. At the Michigan State University laboratory of biophysicist Dr. H. Ti Tien , these ingredients are used to make a device for generating electricity directly from sunlight.

Paleobotany, Dennis Sievers

Iowa Science Teachers Journal

Paleobotany is the study of fossilized plant material, and includes the study of fossilized spores and pollen. Many plants during the Pennsylvanian Period were fossilized during coal formation in permineralizecl peat deposits, forming coal balls. Coal balls contain numerous fossils of plant fragments, including pollen and spores that are preserved in meticulous detail. The tools and processes required for the study of microfossils in coal balls are inexpensive and can be found in most high school laboratories. Two methods of coal ball study will be described in this paper. The first method involves the study of microfossils through the preparation …

Films, Fractions, Ratios And Reels, David Duncan, Bonnie Litwiller

Iowa Science Teachers Journal

Many teachers show films in their classes to supplement scientific concepts. In addition to learning from the content of the film, significant mathematical ideas may be found by observing the motions of the projector itself.

The 1982 Outstanding Service Award, Carolyn Brockway

Iowa Science Teachers Journal

The Iowa Science Teachers Section of the Iowa Academy of Science annually presents a deserving member with the "Outstanding Service Award." This year, Dr. Joe Moore, the science and environmental education consultant of Keystone AEA in Elkader, Iowa was chosen to receive the award. The award was presented at the annual Fall Conference in Marshalltown on November 11.

1983 Nsta Convention

Iowa Science Teachers Journal

"Student, Teacher, Society: Accepting the Challenge" is the theme of the National Science Teachers Association area convention in Biloxi, Mississippi December 1-3, 1983.

A Multiple Evaporator For General Chemistry, H. I. Feinstein

Iowa Science Teachers Journal

Many experiments require a hood clue to the evolution of hazardous fumes. One such experiment involves the use of nitric acid in the determination of combining ratios of certain metals, e.g., tin and oxygen. Where large classes are the rule, as in general chemistry, and the number of fume hoods is limited, the progress of the class is slowed considerably if individual set-ups are used.

Spinach

Iowa Science Teachers Journal

Ever wonder why spinach is supposed to be so good for you? Popeye will tell you it's the presence of healthy quantities of iron. But did you know that every gram of spinach also contains manganese, strontium, zinc, uranium and europium - in fact, at least 27 trace elements?

Wood Won't Work, James Hungerford

Iowa Science Teachers Journal

Electric power plants are rated in terms of megawatts of electric power. A 1,000 megawatt power plant will produce the electric needs for about one million people.

Hawkeye Science Fair

Iowa Science Teachers Journal

The 25th annual Hawkeye Science Fair will be held April 8 and 9 at the Valley West Mall, West Des Moines, Iowa.

Biological Illustration Book

Iowa Science Teachers Journal

Biological Illustration: Techniques and Exercises, just published by the Iowa State University Press, offers a series of introductory exercises designed to develop and increase competency with a pen and ink in biological illustrations. It is written by John C. Downey and James L. Kelly, both of the University of Northern Iowa, and is illustrated by their students in a beginning class. It is designed to meet the needs of high school, junior college, college and independent illustrators.

Start College Early At Iowa - Sstp

Iowa Science Teachers Journal

Each summer over 250 high school students from states coast-to-coast participate in programs offered by The University of Iowa Secondary Student Training Program (SSTP). A very high percentage of these students are traditionally native Iowans.

Rocket Workshop, Robert L. Cannon

Iowa Science Teachers Journal

Would you like a popular, educationally sound, hands-on workshop for your next convention or conference? The workshops on the educational applications of model rocketry put on by Estes Industries have proven very popular. The basic workshop requires a time period of 1½ to 2 hours for the talk, demonstrations, and actual construction of a model rocket by each teacher participant. We have conducted these workshops for area and national conventions of the National Science Teachers Association and for teacher groups in over half the States.

The Nuclear Arms Race And The Science Curriculum, James Cottingham

Iowa Science Teachers Journal

This paper proposes some ideas about the appropriateness and value of the study of nuclear weapons in the school curriculum in general and the science curriculum in particular. I will discuss some ideas that have been tried in this area by me and by others as well as some proposals that could be tried in the future. In addition, I will reflect on things we should be doing as science teachers in regard to nuclear weapons issues.

Lantz Summer Awards For Graduate Study

Iowa Science Teachers Journal

The College of Natural Sciences of the University of Northern Iowa announces the availability of financial awards to pay tuition costs of graduate study during Summer Session 1983 in the fields of Biology, Chemistry, Earth Science, Physics, Science, and Science Education.

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.

A New Association For Earth Science Teachers

Iowa Science Teachers Journal

The Michigan Earth Science Teachers Association (MESTA) has been a positive influence in earth science education primarily through their activities, which include an annual conference, field trips, a quarterly publication and presentations at professional meetings in the state. Almost a year ago the Association voted to devote some of its resources and guidance for earth science teachers on a national basis by sponsoring the National Earth Science Teachers Association.

The Crisis In Science Education: Problems And Recommendations: A Summary Of The Iowa Academy Of Science Symposium At Luther College, Decorah, Iowa, April 22, 1983, Jack A. Gerlovich, Trevor Howe, George Burnet, David H. Swanson, John E. Penick

Iowa Science Teachers Journal

There is a recognized state and national crisis in securing and maintaining "qualified" science teachers. To date the majority of effort has been expended toward identifying and redefining the problems with few attempts made to resolve them. The purpose of this symposium was to spend minimal time seeking to inform participants of the problems and then to present some recommendations for resolving them. Each of the presenters was uniquely to address this, to date, intractable problem.

Cover - Front Matter - Table Of Contents

Iowa Science Teachers Journal

No abstract provided.

Applying Technology To Alleviate The Problems Created By The Shortage Of Qualified Math And Science Teachers, Jack A. Gerlovich

Iowa Science Teachers Journal

In November, 1982, a report (Gerlovich et al., Note 1) was delivered to then Governor Robert D. Ray outlining the problems in science education in Iowa and recommendations for addressing them. Among the major needs outlined were:

1. Salaries of teachers in short supply must be made competitive with those in the private sector.

2. Preservice scholarship and loan forgiveness programs must be initiated for science teaching.

3. Cost effective, continuous, inservice programs for upgrading current science teachers should be initiated.

4. Prospective science teachers should complete coursework for the DPI "all sciences" approval to improve their employability.

5. Local …

A Look At Earth Science Teacher Needs, Peter A. Rubba

Iowa Science Teachers Journal

In preparation for designing a number of inservice activities for science teachers, the author completed a needs assessment on a random, stratified sample of the grade six through twelve science teachers in Illinois. The survey was carried out using the Moore Assessment Profile (MAP), an instrument which had been developed specifically to identify the needs of inservice science teachers.

History Of Science Crossword Puzzle Answers

Iowa Science Teachers Journal

No abstract provided.

Science Notes - Iowa Mathematics, Science Teachers To Receive For Presidential Awards

Iowa Science Teachers Journal

Roger D. Fuerstenberg and Karen Murphy have been selected to represent the state in a national awards program that recognizes outstanding mathematics and science teachers.

Science Notes - Want To Know More About Mount St. Helens?

Iowa Science Teachers Journal

Legislation establishing the Mount St. Helens National Volcanic Monument has been passed by Congress and signed into law by the President. This action gives added significance to informational materials already produced by the Forest Service, U. S. Department of Agriculture, to help people better understand the cataclysmic event and the aftermath of May 18, 1980, in the Gifford Pinchot National Forest of Southwest Washington.

A History Of Science Crossword Puzzle, Timothy Cooney

Iowa Science Teachers Journal

How is your memory? The names of famous contributors to science provide the answers to the following crossword puzzle.