Science and Mathematics Education Commons^™

The Specific Surface Area Values For Iowa Tills, Keith E. Schilling, Brian L. Gedlinske

Journal of the Iowa Academy of Science: JIAS

Specific surface area is a property used by earth scientists to estimate the proportion of expandable clay minerals in soils. In this study, specific surface area method is shown to compare favorably with standard clay mineralogical techniques in determining gross differences in expandable clay mineral content in tills. The results of over 100 measurements on till samples from Iowa indicate undifferentiated pre-Illinoian tills from southern and southwestern Iowa have the highest specific surface area values of Iowa tills (ranging from nearly 100 to greater than 150 m²/g) and Wisconsinan Dows Formation tills have the lowest average specific surface …

The Effects Of Spacing A Science Unit On Sound On The Conceptual Understanding Of Eighth Grade Students As Evaluated Through Concept Maps, Lyn Le Countryman

Faculty Book Gallery

In 1989, the National Science Teachers Association proposed a new "Scope, Sequence, and Coordination (SS & C)" for grade 7-12 science. Instead of studying science in one-year packages of physics, chemistry, biology, and earth/space science, proponents of SS & C proposed that students study each of these disciplines every year. The idea that students can learn and retain new material better if they study it in spaced intervals rather than all at once provided the focus for this study.

There is a base of psychological research demonstrating the positive effects of "spaced" practice on recall and recognition, but few of …

Mass Dependent Loss Of Resolution In Radially Inhomogeneous Exb Ion Traps, Mark A. Capron, Susan S. Haskin, Curtiss D. Hanson

Journal of the Iowa Academy of Science: JIAS

ExB ion traps, such as Fourier transform Ion Cyclotron Resonance mass spectrometers (FY:ICR), mass analyze sample ions based on differences in their cyclotron frequencies in a homogeneous magnetic field. The high resolution mass measurements of FT-ICR are based on the relationship between the frequency of the cyclotron orbit and the mass-to-charge (m/q) ratio of an ion. Both the orbit and the frequency/mass relationship result from the radial forces on the ion. Ions trapped by inhomogeneous electric fields experience different magnitudes of the radial electric fields at different positions resulting in a positionally dependent frequency. Such differences in orbital frequencies for …

A Study Of Effective Practice In Primary Science Teachers, Leslie Jane Wilkinson-Brandt

Dissertations and Theses @ UNI

The purpose of this study was to determine if the science teaching practices identified by Tobin and Fraser (1988) are indeed used more often by science teachers who have been judged more effective by supervisors. Through a review of the articles on the project, Exemplary Practice in Science and Mathematics Education (EPSME) an observation model of effective teaching was created. The observation model listed practices determined to be effective through the qualitative observations of teachers identified as exemplary by their supervisors. This observation model was then tested in a mathematics and science institute for the at-risk student. The research consisted …

The Annual Meeting Of The Iowa Academy Of Science April 19-20, 1991 [Program, 103rd Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Program Summary --- 5
General Session Speakers --- 10
Awards --- 13
Distinguished Fellow --- 13
Distinguished Iowa Scientist --- 14
Symposia Programs --- 15
Poster Session --- 18
Campus Map --- Centerfold
Section Programs --- 19
Agricultural Sciences --- 20
Anthropology --- 21
Botany --- 21
Cellular & Molecular Biology --- 23
Chemical Education --- 27
Chemistry, Inorganic --- 27
Chemistry, Organic --- 29
Conservation --- 31
Earth Science Teaching --- 32
Elementary Science Teaching --- 32
Engineering --- 32
Geology --- 35
Linguistics --- 37
Nursing --- 38
Physics --- 38
Physiology --- 39
Psychology --- 40 …

Program Abstracts, 103rd Session, Iowa Academy Of Science, April 19-20, 1991, Iowa Academy Of Science

Iowa Academy of Science Documents

Presentation abstracts from the annual meeting of the Iowa Academy of Science

Cover - Front Matter - Table Of Contents

Iowa Science Teachers Journal

No abstract provided.

An Epa Water Quality Test For Middle Schools: Filterable Residue, Charles Englund

Iowa Science Teachers Journal

One part of the Clean Water Act requires monitoring the quantity of suspended particles in water. Water is tested before and after being used by industries. The quantity of suspended particles is measured by weighing the residue filtered from the water. This experiment, appropriate for use with upper elementary and junior high students, provides an opportunity to participate in a water quality test used by the Environmental Protection Agency (EPA). Minimal equipment is needed; no hazardous material is involved and the experiment gives interesting results on local water. The results are recorded in milligrams per liter, which is parts per …

State Indicators In Science And Mathematics Education: A Comparison Of Iowa And The United States, John Ramsey

Iowa Science Teachers Journal

The first state-by-state data of key indicators of the condition of science and mathematics in schools has been issued in a report from the Council of Chief State School Officers (CCSSO). This report, State Indicators of Science and Mathematics Education, is supported by a grant from the National Science Foundation. The project identified two objectives: (1) to improve the quality and usefulness of data on science and mathematics education so that state policy makers and program managers can make more informed decisions; and (2) to define and implement a set of indicators, national and state level analyses of progress in …

Astronomy Bulletin - The 1992 Spring Sky, Patrick Steven Leiker

Iowa Science Teachers Journal

No abstract provided.

Science Notes - Summer Opportunities For Math And Science Teachers, Jonna M. Higgins

Iowa Science Teachers Journal

Northwest Missouri State University is seeking high school level math and/or science teachers interested in teaming with Northwest University instructors as part of an Upward Bound administered summer program. Team members' job responsibilities include teaching students, guiding and monitoring student laboratory work and research, evaluating student work, attending weekend activities and/or field trips and evaluating the program. The major emphasis of instruction will be to integrate the topics of the week in a manner that will help students understand that knowledge is not discrete.

Science Notes - Student Opportunities To Name Features On Venus

Iowa Science Teachers Journal

When astronomers and planetary geologists first see a new terrain feature on Venus, they typically assign both a descriptive term (like "crater," "corona" or "mons") as well as a particular name. Since Venus was the Roman goddess of love, scientists have decided to name its features after famous females throughout history. Most of the large features, like the Venusian land masses Aphrodite Terra and Ishtar Terra, have been named for love goddesses from other cultures. Although names for many of the craters have already been proposed, the International Astronomical Union, which is the sole authority for assigning names to celestial …

Science Notes - National Astronomy Exposition At Wisconsin Meeting

Iowa Science Teachers Journal

Universe '92, the first-ever national astronomy exposition, will be the principal weekend event at the 104th Annual Meeting of the nonprofit Astronomical Society of the Pacific, to be held at the University of Wisconsin in Madison, June 20-25, 1992.

Science Notes - Chemsource Modules Being Tested

Iowa Science Teachers Journal

ChemSource is a three-year project to produce materials that will provide day-to-day support for preservice and in-service high school chemistry teachers. Now in its second year, the project is funded by a $1.3 million grant from the National Science Foundation. The principal investigator is Mary Virginia Orna, professor of chemistry at the College of New Rochelle, NY.

Science Notes - National Institute Of Health Offers Newsletter, Jonna M. Higgins

Iowa Science Teachers Journal

The National Institute of Science publishes a newsletter reporting recent research conducted or supported by the National Institute of Health. The Fall 1991 issue, for example, contains four articles, including one titled "Gene Engineered Bacterial Toxin Kills AIDS-Infected Cells in Laboratory Tests."

Science Notes - Review: Out Of The Ozone, Carl W. Bollwinkel

Iowa Science Teachers Journal

David Davis has successfully used slides to develop a video titled "Out of the Ozone" which is appropriate for secondary chemistry and earth science students. The video reviews the development of the ozone problem and the theories about it. "Out of the Ozone" also helps students by identifying many factors promoting ozone depletion.

Science Notes - Natural History Potpourri Workshops

Iowa Science Teachers Journal

27. natural

Natural History workshops are scheduled at the Conservation Education Center (Springbrook) for the weeks of June 14-19 and 21-26, 1992. The potpourri of topics includes: birds, trees, rocks, prairie plants and pond life. The week-long sessions will include field trips, lecture/discussions, slide talks and participation in activities which link the content topics to classroom activities. Highlights of previous programs have included canoeing the slough for observations of yellow-headed blackbirds, making T-shirt designs with Cherokee leaf pounding, a trip through a virgin prairie and the "Potpourri Picnic."

Science Notes - Review: Odyssey, Darrel Hoff

Iowa Science Teachers Journal

Kalmbach Publishing has now sold its middle-school / junior-high level magazine Odyssey to Cobblestone Publishing. This magazine uses the theme of space and astronomy to motivate its readers. The transfer of ownership has resulted in a reduction of the page-size of the magazine, while most of the features of the earlier journal are retained.

Cover - Front Matter - Table Of Contents

Iowa Science Teachers Journal

No abstract provided.

Temperature Trends In Iowa, Laurent Hodges

Iowa Science Teachers Journal

With all the discussion about possible global warming, many people have wondered: What is the historical trend in Iowa's temperatures? This can be answered reasonably well for the past century. Temperature records since 1873 have been compiled by the State Climatological Office and its predecessors (National Climatic Center, 1990). For many years the State Climatologist published the average annual temperatures for the state as a whole, but that practice ceased in the early 1950s. Consequently, I have gone back over the records of the last 11 decades (from 1880 to 1989) and computed an average annual temperature for each year …

Astronomy Bulletin - The 1990-91 Winter Sky, P. Steven Leiker

Iowa Science Teachers Journal

No abstract provided.

Science Notes - Isu Holds Career Conference For Women

Iowa Science Teachers Journal

''Taking the Road Less Traveled," a conference which allows young women to explore career opportunities in science, math, engineering and technology, will be held at Iowa State University in spring. Throughout the day, students will participate in sessions featuring careers in architecture, chemistry, industrial and civil engineering and computer programming. In addition, they will learn how to prepare for different careers during high school and college.

Science Notes - Cesi Make-It, Take-It, Think-About-It Workshops

Iowa Science Teachers Journal

The Council for Elementary Science International (CESI) will be conducting its Make-It, Take-It, Think-About-It workshops during the NSTA National Convention in Boston, Massachusetts, on March 27 and 28, 1992, and is currently accepting reservations for presenter spaces at the workshops.

Science Notes - Fellowships For Outstanding Math And Science Teachers, Stephanie A. Althof

Iowa Science Teachers Journal

The Council for Basic Education (CBE) will again offer Sci-Mat Fellowships for 1992. Recipients of the fellowships spend six weeks during the summer in full-time, independent, interdisciplinary study linking the sciences and the humanities.

Cover - Front Matter - Table Of Contents

Iowa Science Teachers Journal

No abstract provided.

Science Notes - Environmental Issues Instruction Workshop

Iowa Science Teachers Journal

A Resource Enhancement and Protection Act (REAP) grant has been awarded for the continuation of the Environmental Issues Instruction Workshops. Topics scheduled for 1991-92 are: "Solid Waste Management," "Global Climate Change" and ''Tropical Rain Forest." The instructional program is appropriate for the students of elementary and high school teachers.

Science Notes - New Hands-On Elementary Science Program

Iowa Science Teachers Journal

The National Science Resources Center has introduced the first three units of its new hands-on elementary science program. "Plant Growth and Development," "Electric Circuits" and "Microworlds" were demonstrated at a March 6 news conference in Washington, DC. The units are part of NSRC's elementary science curriculum project, "Science and Technology for Children" (STC). The project is based on the principle that children learn science by doing science.

Science Notes - Newsletter On Teaching Astronomy Available

Iowa Science Teachers Journal

A free newsletter on teaching astronomy in primary and secondary schools is being offered by four leading professional astronomy societies (Astronomical Society of the Pacific, American Astronomical Society, Canadian Astronomical Society and International Planetarium Society) in North America.

Science News - National Middle Level Science Teachers Association, Stephanie A. Althof

Iowa Science Teachers Journal

Efforts are currently underway to establish a national professional organization for teachers of middle school science. The National Middle Level Science Teachers Association (NMLSTA) is currently inviting educators across the nation to become members.

Science Calendar

Iowa Science Teachers Journal

No abstract provided.