What is the strongest method of building a bridge with paddle pop sticks?

People who have strong knowledges of engineering preferred. As a high school student I've got a engineering competition at a local university to attend and I've got a sneaking suspicion that such a task may be involved as it was with students from my school doing it last year.

If anyone has links to information on basic engineering concepts as well it would be much appreciated. I know lots of it is just common sense but if I can have some easy to understand tips - or else formulas (which do not have to be easy to understand I can work it out) to do with structures it would help me gain the advantage on other schools and do my school proud.

Thanks in advance. Anything helps.

Answer:
If all you can use is "pop sticks", the answer is a truss.

Start here: http://en.wikipedia.org/wiki/truss...

... lots of links at the end of the wiki article.
I agree with above the more triangles you can form the stronger the structure becomes.
Also if you can add angular support under the bridge you can greatly increase its strength.

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