<p>CR and Writing rely on many of the same core skills, so study of those skills will improve your scores in both areas. That’s the good news. The bad news is that those scores are developed over a lifetime of experience and, while intensive short-term, study can certainly help, don’t expect miracles.
At middle score ranges, math scores are largely dependent upon your knowledge of factual material and math scores are the most coachable. Review of forgotten material, and learning introductory material in unfamiliar areas can help. Don’t go for gimmicks. Most only work if you already have a basic understanding of the concepts being tested.</p>