Towers are an ideal first choice for a K'NEX challenge. Children (and adults!) of all ages enjoy building towers.
Below are photos of a few of these different types of tower, that may help to give you some ideas .
Click on any image below to see a larger picture. You may also like to view some K'NEX tower examples.
One way of finding more pictures of real-life towers is to do a search in Google Images for "Towers".
Some of the parameters you might think about in completing a Tower challenge are:
♦ How tall is your tower?
♦ How stable is your tower (ie does it fall over easily)?