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Web-Based Learning Aids

Computer programs and documents are written by conscientious chemistry educators worldwide to aid students. We make these tools available so they may be used not only in the classroom or laboratory, but also in the student's dorm room, home, or local campus computer lab. These tools may include Java applets, dynamic HTML (DHTML) pages, virtual reality (VRML) documents, QuickTime and Flash movies, animated gifs, and applications that can be used over the Internet with helper programs such as Excel.

JCE WebWare maintains two collections of WWW-based learning aids: a peer-reviewed collection and an open-review collection. The table below summarizes the differences between the collections.

Access
Reviewed by
Printed in JCE
Peer-Reviewed Collection
JCE subscribers only
Anonymous peers
Abstract
Open-Review Collection
Unrestricted
Semi-public forum
Title, author in list

Latest Additions, Peer-Reviewed Collection
June 2009
* iconExcel Tutorial: Using the Least-Squares Method To Calculate Unknown Concentrations and Error
J. J. Harynuk and J. Lam

This online tutorial was developed to address the problem that, in their third-year analytical instrumentation laboratory, undergraduate chemistry students often lack the basic skills required to evaluate data, generate a calibration curve using least-squares, and calculate the error in the value that they are reporting.

April 2009
* iconUsing Spreadsheets To Emulate Diffusion and Thermal Conductivity
Harvey F. Blanck

Diffusion and thermal conductivity processes can be emulated using spreadsheets that use columns for increments in distance and rows for increments in time. For classroom presentations Microsoft's PowerPoint slides of the change in concentration or temperature with time from spreadsheet charts can be created to look essentially identical to demonstrations using the plastic model this author discussed in a previous article.

* iconInteractive Two-Component Phase Diagrams
J. Charles Williamson

Six interactive two-component phase diagrams have been created with Microsoft Excel spreadsheets. The collection includes examples of solid-liquid, liquid-vapor, and liquid-liquid phase diagrams. By clicking on spinner controls embedded in each spreadsheet, the user can change the system's composition and temperature (or pressure) in real time. The spreadsheet automatically updates the state of the system in the phase diagram, adding a tie line if the system undergoes phase separation. Several spreadsheets also feature a cartoon representation of the state of the system.

February 2009
* iconAn Interactive Spreadsheet for Demonstration of Basic NMR and Fourier Transform Concepts
Markus M. Hoffmann

Here we present an interactive Excel® spreadsheet along with a tutorial that demonstrates a number of basic NMR and Fourier transform concepts. Specifically, the user can generate free induction decays (FIDs) and study the effect of changing frequency, number of protons present as well as phase and line broadening settings on the FID. The user can also explore the details of obtaining a spectrum from Fourier transformation and how artifacts may result from improper sampling and Fourier transforming the FID.

January 2009
* iconVisualization Tools for Organic Chemistry
Jennifer L. Muzyka

These visualization tools focus on improving students’ ability to visualize by the interactive display of molecules, along with text and buttons that activate scripts to highlight structural features or start-and-stop appropriate animations. These tools target a series of topics that students have difficulty visualizing, rather than making the whole course Web-based. The tutorials cover conformations of alkanes and cycloalkanes, stereochemistry, and several reactions (SN1, SN2, E1, and E2).

* iconChem Map: A Geographic Information System Web Page for Chemical Education
Benjamin R. Ayres, William Garrick, Savyasaachi Murthy, Nehal Sanghvi, Amit Kulkarni, and Scott M. Reed

Chem Map is a Web-based GIS tool that overlays chemical information with geographic information, facilitating the use of GIS in teaching chemistry, materials science, and nanoscience. This approach can make complicated topics more personal and accessible to students, increasing their interest in chemistry.

* Complete Table of Contents for Peer-Reviewed Collection
 

Feature Editor
* William F. Coleman
(a.k.a. Flick Coleman)

Flick Coleman
* Wellesley College
Wellesley, MA 02481
* 781/283-3129
* 781/283-3642
* wcoleman@wellesley.edu
Assistant Editor
* Edward W. Fedosky
Ed Fedosky
* Journal of Chemical Education
209 N. Brooks St.
Madison, WI 53716
* 608/262-2072
* 608/262-7145
* fedosky@chem.wisc.edu
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