<p>going through relevant core classes to help prep for calculus, chemistry and physics in
Khan</a> Academy
and doing the practice problems provided to help reinforce them</p>
<p>Good idea? I really have nothing to do now that summer is winding down a bit.</p>
<p>Sure its a good idea. Its always a good idea to be on top of things, and keep your mind fresh.</p>
<p>That being said, you will notice that some professors will not expect you to know too much coming in as freshmen.</p>
<p>That said, enjoy your summer. Have fun. These days will go by fast, and you will wish it never ended!</p>
<p>Enjoy your summer. Just study for placement exams. Trust me.</p>