This page is a work in progress.

http://www.dreambox.com/ca/teachertools-match-n-make

You can explore NLVM http://nlvm.usu.edu/
http://www.delicious.com/mr.b.miller/math+interactive

In addition, here are the tools that I use for creating virtual manipulatives:
  • SMART Notebook Software (if doing stuff for a SMARTboard)
  • Geogebra http://www.geogebra.org - free & open source, Java based, can be run as online applet or installed & can create applets
  • Macromedia Flash
  • Microsoft PowerPoint - using custom animations & macros/VB scripts
http://nlvm.usu.edu/en/nav/vlibrary.html

Available in French and Englich
http://www.fi.uu.nl/rekenweb/en/welcome.xml?groep=0

http://www.fi.uu.nl/toepassingen/02015/toepassing_rekenweb.xml?style=rekenweb&language=en&use=game