<p>I just looked at the Real ACT Guide book and everything on it was so easy. The science section is not that hard. It seems like there's a lot of crap on there to trick you but the answers were relaly clear to me. I thought the science section would be super hard after first going through Barron's. The real test is not that hard and for science, the questions are simple and direct.
The only hard part was probably the reading. It doesn't change from book to book and I always screw up on one kind of passage, either fiction or humanities. I prefer reading facts and things. The social studies and natural science passages are easy because when I go through the questions, I remember what I read and what I didn't read. So for all you people who think this test is hard, try the Real ACT prep book.</p>
<p>The difficulty of the science test is not in the questions, it's in the time constraints. Sitting at home, casually reading over questions, taking all the time you need is quite a bit different from when you're up at 8 in the morning on a Saturday, scrambling to answer all the questions within the strict time limit, after already having spent a few hours taking the English, Mathematics, and Reading tests.</p>
<p>Anyway, I second the recommendation of the official prep guide. The practice tests in it are simply awesome (I use that term loosely).</p>
<p>I would recommend the PR book (Cracking the ACT) also. The tests are great.</p>