This international project from Clarence Fisher at the blog Remote Access is fascinating. 

 Students from four countries are participating in what he calls an “international assembly line” on a research question.  Students in  schools in Kuala Lumpur and Columbia are providing one part of the project and then students in Canada and the United States will complete it and put the multi-media together.   They are using a wiki to plan the project.

I should add that these are middle school students participating in this global learning opportunity.