Search Engine Optimization Revisited

I'm still optimizing my website to receive more random visitors. I reread some information regarding Google Page Rank. It appears that if I want my homepage's page rank to be the highest, the best approach is for my homepage to link to a bunch of my pages, and have those pages link back to my homepage. One problem I was having was that every page has a sidebar full of links, which means I have a bunch of pages that all link to each other, which evens out my page rank for each page. I did some weird stuff by shifting the sidebar link code into a Javascript file, which should hide them sufficiently from a web spider. I also changed the MathScore logo on each page to be a link back to http://www.mathscore.com. Hopefully this will improve my page rank, because currently, I have a problem that my homepage has a rank of 3, but every other page on the site has a rank of 4. With my optimizations, I'm hoping to reverse that trend, giving my homepage at least a rank of 4. My goal is a page rank of 5, which would tremendously improve my position on Google math-related queries. Currently, MathScore is almost impossible to find through a normal math query, so my primary source of visitors has been through ads.

I also started advertising on both aplusmath.com and mathgoodies.com. I know that my aplusmath.com ad is more cost effective than my Google ads, and we'll see how the mathgoodies.com ads work over time. If you wouldn't mind helping me out on the advertising front, please place a link to MathScore.com somewhere on your blog or website. Every link helps, and those links can help boost my page rank.
Please see http://www.mathscore.com/linkToUs.html for details.