**PASCAL’S TRIANGLE:**

An interactive version of Pascal’s Triangle.

http://mathforum.org/dr.cgi/pascal.cgi

Here is another site on Pascal’s triangle:

http://mathforum.org/web.comments/ladja.pascal.html

**PROBLEM SOLVING:**

This site give a nice introduction to problem-solving.

http://mathfocus.tripod.com/page3.html

A site which lists other sites on mathematical puzzles:

https://www.mynhusd.org/