The L2TD site was developed with support from the National Science Foundation (Grant No. 0205625) with lots of help from the L2TD community. L2TD grew out of the TRAILS project (Training and Resources for Assembling Interactive Learning Systems), led by SRI International's Center for Technology in Learning. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

Founding members of the L2TD community are:

• Chris DiGiano at SRI International (see his technology)
• Shelly Goldman at Stanford University (see her course)
• Alex Repenning at the University of Colorado at Boulder (see his course)
• Chris Hoadley at Penn State University (see his course)
• Frank Lee at Drexel University (see his course)
• Suzanne Alejandre at the Math Forum @ Drexel (see her activity)
• Michael Chorost, freelance consultant and writer (see his website)