Usage is calculated on the last day of every month. For more information on usage data, visit the Usage Overview page.
|Rank by Contributions:||31 / 1985|
|First Contribution:||12 Sep 2005|
|Last Contribution:||25 Oct 2017|
|Citations on Contributions:||67|
|Usage in Courses/Classrooms:||3,001 users served in 203 courses from 34 institutions|
* Total only includes versions of the tools this author contributed to.