Usage is calculated on the last day of every month. For more information on usage data, visit the Usage Overview page.
|Rank by Contributions:||2 / 1960|
|First Contribution:||04 Nov 2004|
|Last Contribution:||16 Mar 2017|
|Citations on Contributions:||316|
|Usage in Courses/Classrooms:||11,231 users served in 776 courses from 64 institutions|
* Total only includes versions of the tools this author contributed to.