Are you a fifth grader, or do you think like one? Even if you don't fit into either category, you may be interested in checking out the free activity book "Understanding Invasive Aquatic Weeds." Developed by the Aquatic Plant Management Society, the book is full of information and activities to help kids learn about aquatic weeds. You can download the acticity book for free, but if you don't have a good printer, you can also order paper copies and pay only the cost of postage.
Thanks to a member of the ALIENS-L listerserver for posting information about this topic.