Stoichiometry by the Recipe Method: SBR
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Stoichiometry by the Recipe Method: SBR
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This website in its essential form has been submitted to distinguished colleagues for their review and suggestions for improvement. While most of this has been done by personal correspondence, the following feedback has been received. Emory Howell, former H.S. editor of JCE wanted student teachers that he supervised to switch to this instructional strategy. George Bodner of Purdue University states, "first most and most importantly, the method generates correct answers." He expresses concerns of the continuing chemistry student being able to understand and apply the traditional methods of instruction. The target audience of this pedagogy is the future non-scientist. This pedagogy takes some of the mystery out of chemistry and simplifies mathematical manipulations. Continuing chem students should be able to cope with various instructional methods. This strategy has been used successfully with regular introductory chem students with improved grasp of the concept of proportionality. There have been no ill effects with AP Chem students. One noteworthy student matriculated from the Air Force Academy in material sciences and is currently on track to obtaining his PhD. in chemistry with intent to return to the Academy as a Chemistry Professor. This is a novel approach to teaching stoichiometry. " In an unpublished study of books dealing with chemical stoichiometry and spanning the period 1865-1995, Dr. William B. Jensen of the University of Cincinnati found that mass-mass problems were uniformly worked using the ratio or proportionality method until the 1940s. In the 1950s there is a transition period in which both the ratio approach and the newer mass-mole unit cancellation approach is used, with the latter method being dominant from the 1960s to the present. No evidence was found for your approach." (emphasis added) William B. Jensen, Chemical Historian for JCE, Feb 2004 |
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Copyright (c) John Brodemus, 1995-2005. Visitors This page was last updated: 03/03/04 04:31 PM |