A student named Anna Galovich translated one of the lesson plans in the RealTrees4Kids! online curriculum for a communications class project and it's really good. Kind of a neat story.
Here's the original lesson plan in RT4K! http://www.realtrees4kids.org/sixeight/cycles.htm and here's the translation page she did http://webhostinggeeks.com/science/realtrees-4kids-et