@BillGates: Highlighting a few tools and resources to help teachers during this back to school season. See how to support them: http://t.co/S9UVeOPu

Highlighting a few tools and resources to help teachers during this back to school season. See how to support them: http://t.co/S9UVeOPu http://twitter.com/BillGates/status/240874812539564032