I'm glad you liked the unit! My student have found the lessons helpful, so I hope yours will too. I took down the challenges because my students had difficulty with them. I'm planning on modifying them to make them more manageable, but I haven't gotten around to it yet. Some of the words were too difficult for 7th graders, so I ended up using the challenges as extra credit.
That being said, I just uploaded them to the site and listed them as free. I'll keep it up for a few days so you can download the file. Maybe you can modify it to make it work. Good luck!
August 31, 2011