This is a NASA eClips activity in the Teaching From Space program. It's something kids should be able to do on their own, although it's designed as a grades 9-12 physical science/basic physics activity. A template for making a boomerang is included, along with several NASA resources.
Approved, but not quite published. Should be available under Grades 9-12 at the NASAeClips Educator Guides website:
http://www.nasa.gov/audience/foreducators/nasaeclips/toolbox/guides.html