• Dweeber
  A homework collaboration site that also has tools to help students learn better. It is described as a homework social network. Students can add their friends, known as "dweebs" to their network, work on homework together and help each other out. It even as a virtual whiteboard so that they can work together just as if they were in the same room.
  with system:unfiled
• Scribblar.com - Free Online Whiteboard and Collaboration Tool
  An online meeting room / white board. Students can use it to collaborate on projects, teachers can tutor via the computer, and teachers can use it for collaborative meetings and projects.
  with system:unfiled

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