<p>He should do MathCounts. It’s meant for middle school students and is a good contest.</p>
<p>Otherwise, check out the following:</p>
<p>[Alcumus</a> Introduction](<a href=“http://www.artofproblemsolving.com/Alcumus/Introduction.php]Alcumus”>http://www.artofproblemsolving.com/Alcumus/Introduction.php)
[TEXTBOOKS</a>, LECTURE NOTES AND TUTORIALS IN MATHEMATICS](<a href=“http://mathbooks.110mb.com/mylist.php]TEXTBOOKS”>http://mathbooks.110mb.com/mylist.php)
[Math</a> Books](<a href=“http://www.artofproblemsolving.com/Resources/AoPS_R_Books.php]Math”>http://www.artofproblemsolving.com/Resources/AoPS_R_Books.php)
[Amazon.com:</a> Concepts of Modern Mathematics: Ian Stewart: Books](<a href=“http://www.amazon.com/gp/product/0486284247/ref=ox_ya_oh_product]Amazon.com:”>http://www.amazon.com/gp/product/0486284247/ref=ox_ya_oh_product)
[Amazon.com:</a> How to Solve It: A New Aspect of Mathematical Method: G. Polya: Books](<a href=“http://www.amazon.com/exec/obidos/ASIN/0691023565/artofproblems-20]Amazon.com:”>http://www.amazon.com/exec/obidos/ASIN/0691023565/artofproblems-20)
[Wolfram</a> MathWorld: The Web’s Most Extensive Mathematics Resource](<a href=“http://mathworld.wolfram.com/]Wolfram”>http://mathworld.wolfram.com/)</p>