What the Nintendo Ds can be used for in School?

The Nintendo DS can be mostly used for math & science. For math it can be used for workings on its touch screen. Instead of using your paper notebook use the Ds notebook in which you can finish your work faster. In science when you are watching a educational video you can take notes in the ds notebook. I'm sure it would be OK if each student had 1 because it only costs 400 QR.