2008 AP Books vs Old Ones - Which are Better?

<p>So.. im planning to buy some test books for my upcoming AP tests. Should i go with all new versions or stick to the old ones?</p>

<p>AP Courses that I'll be getting books for:</p>

<p>AP Calc AB
AP Biology(might just get the cliff notes)
AP Economics(macro/micro)</p>

<p>Barring new editions of the AP exam, how much do you think our modern knowledge of Calculus, Biology, and Economics has changed since last year or some other addition other than 2008?</p>

<p>I think the answer lies above. ;-)</p>

<p>Slight, fundementals may seldom change in these areasm, but we are not on the cutting-edge research, but for a test that administrator can easily change test rule and content.</p>

<p>But still, I am sure there will not be too much changing contents except re-formatting of the book</p>