When it comes to virtual manipulatives, I have always been a big fan of the National Library of Virtual Manipulatives. Today, I came across another great site that I plan to add to my resources! This site is from Glencoe/McGraw-Hill. It does not have quite as many manipulatives as NLVM, but the ones that it does have are very well done. Here are a few of my favorite features:
-A variety of backgrounds including game boards (with pieces), work mats, and story mats.
-Much, much more!