Math continues to increase its presence on the web, particularly for educational purposes. The advantage of many of these tools allow students to access differentiated skill practice and improve at their own rate. It also allows students to make some of the more abstract manipulations and concepts more real.
One such site I recently ran across was GeoGebra. It has an entire wiki devoted to educational uses. The website claims it seeks to go beyond some of the geometry manipulations and directly link algebra to some geometry concepts. It seems to have an array of options and ways for students to manipulate objects. In just a couple minutes I was able to take a screencast of this example:
Reuters reports on an Oxford professor who has developed a subscription service of video games that engage students in real world problem solving and fun. He calls his site Manga High. I checked out some samples and the site definitely looked pretty good at challenging students in engaging ways.
One of our elementary schools uses Mathletics.
The point is this: tools available if you want to look for them. And the quality and benefit of these tools is increasing. Regardless of subscription services or free tools, accessing some of these resources can be a great asset to students.