<p>You’re in luck because M and W are the easiest to improve! For math, you should check out Grubers (the edition doesn’t matter). It is by far the best math book out there. For writing, it depends on which section you’re doing worse on. If its the essay, check out <a href=“http://talk.collegeconfidential.com/sat-preparation/645763-how-write-12-essay-just-10-days.html[/url]”>http://talk.collegeconfidential.com/sat-preparation/645763-how-write-12-essay-just-10-days.html</a>. If its the grammar, I suggest either grammatix or RR.</p>