My nephew took the Manhattan review course for GMAT but clearly has more of a problem on the Quant section than he'd like. He takes the GMAT again in 3 weeks. How can he get his quant score up? He has already taken a course and learned strategies. Is it a matter of practice tests? If so, which will help raise his score in the shortest amount of time? Any other ideas on how to raise the score on the quantitative sections?