If you don't subscribe to The Old Schoolhouse Magazine, you might consider at least ordering the current issue. I wrote a unit on Following the Iditarod that is really tons of fun to do with your kids. You'll find all kinds of ideas and resources. The race starts the first week in March so you have plenty of time to get your issue and gather supplies and resources. This is really a great "real-time" learning project.

Oh yeah, there's other good stuff, too. Ha!