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High School Chemistry In Iowa: Current Status, Recent Trends, And Future Prospects, R. W. Hanson
High School Chemistry In Iowa: Current Status, Recent Trends, And Future Prospects, R. W. Hanson
Proceedings of the Iowa Academy of Science
A survey of Iowa's 485 high school chemistry teachers and information from the Department of Public Instruction provide the basis for a description of the "typical" Iowa chemistry teacher in terms of age, experience, academic background, salaries, and teaching practices. Trends in student attitudes and modification of teaching practice during the 1981-84 period when the "crisis" in science education in the United States was being emphasized in the media were assessed from responses from 365 teachers. Results indicate that Iowa's chemistry teachers are conservative in making innovations in teaching practice, and the goal of increasing student exposure to chemistry is …
The Current Status Of The Limnology And Bottom Fauna Of Lakes West And East Okoboji, David D. Gale, Everette E. Drevs, Michael P. Gross
The Current Status Of The Limnology And Bottom Fauna Of Lakes West And East Okoboji, David D. Gale, Everette E. Drevs, Michael P. Gross
Proceedings of the Iowa Academy of Science
Lakes West and East Okoboji, Dickinson County, Iowa, were the site of a 1970 summer investigation on the density and diversity within the macroscopic bottom organisms, physical and chemical measurements of the water and substratum chemistry study. These data on Lake West Okoboji were compared with a 1918 and 1950 study of the macroscopic bottom fauna, water analyses dating from 1934, and oxygen and temperature data from as far back as 1915. The sparse species composition of the bottom fauna has remained unchanged; however, pollution indicator tubificid worms have increased in density. Water analysis, oxygen, and temperature data are little …