Grading Tips

https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0Bx2T2LpxNhm-YmI2NWY0ZjItNDM2Zi00MGVhLThmNmEtM2ZjN2ZhNzBlNTFm&hl=en&authkey=CL7quJkP