Usage is calculated on the last day of every month. For more information on usage data, visit the Usage Overview page.
|Rank by Contributions:||67 / 1988|
|First Contribution:||29 Mar 2007|
|Last Contribution:||28 Jan 2010|
|Citations on Contributions:||7|
|Usage in Courses/Classrooms:||1,973 users served in 90 courses from 14 institutions|
* Total only includes versions of the tools this author contributed to.