best refresher material

[bumblenbumble01]

hi all,
i'm in the beginning stages of preparing for the gmat. one thing i have notice is i'm incredibly rusty in the math area. while the OG and princeton review do a great job of providing overview, what materials did you find most effective in really diving in the mathematical fundamentals?

thanks!

[gaggleofgirls]

I bought the PDF book from GMAT hacks (at www.gmathacks.com) and found the math review to be very helpful. It has been 22 years since I graduated college and I needed to re-learn (and in some cases actually learn) the math.

That plus this forum has been great.

We will find out how great on Tuesday when I take the test

-Carrie