Printliminator is a handy little bookmarklet for Firefox (update: it also works in Chrome and Safari) that I just learned about from Steve Dembo. Printliminator allows you to highlight a webpage and select only the elements which you wish to print. You can install Printliminator in seconds by just clicking and dragging it into your browser's toolbar.
Watch the video below to learn more about Printliminator.
Applications for Education
If you've ever found an online article that you wanted to print for classroom use, you know that ads inserted into the text or excessively large headers can result in using more ink and paper than necessary. Printliminator allows you to remove those unnecessary elements and print just the text thereby saving your school paper and ink costs.
Here are some related items that may be of interest to you:
Save Paper and Save Ink, Use Print Friendly
Save Paper, Print What You Like
Free eBooks Search Engine