<p>JenPam : I had my son watch the MIT open courseware videos (google it) on Physics-I (Mechanics) and Chemistry 3.091 ( Solid State Chemistry by Don Sadoway - first 10 lectures). He aced both his Physics and Chem tests. The key for SAT-2 subject tests is to make sure that he is confident of the concepts. For Physics the curve is very generous since the range of topic is numerous. Math2 - there was a book by a Turkish chap (dont recall exact name - called Rusmen I think) - Math2 is also relatively easy to ace. Hardest of the the three is probably Chem.</p>