I've been introduced to 2 FABULOUS websites that will be great for students to learn independently on. Could be great for centers/stations/Daily 5/Tabor Math rotations, etc. They can also access them at home.
StudyLadder - You create a class, and then assign tasks. Each student has their own account and login with an avatar they can edit to look like themselves. They work to earn rewards and can able to spend them on things online.
DoveWhisper.com - The Dovewhisper Computer Centers were created as an effort to assist teachers in both incorporating technology and enriching their curricula. It is my hope that you and your students will find this site most beneficial and enriching.
Check them out!!! :)