<p>Chemistry:
[AP</a> / IB Chemistry](<a href=“http://www.roomd113.com/AP%20Chem.htm]AP”>http://www.roomd113.com/AP%20Chem.htm)</p>
<p>US history:
[Invader’s</a> Realm: APUS History Notes](<a href=“http://www.colinjeanne.net/apus/history/notes.htm]Invader’s”>Invader's Realm: APUS History Notes)</p>