This blog: http://blog.wired.com/geekdad/ Check out the categories on the side, there are science experiments, rockets, robots, science fair and more. It is written by geeky parents (mostly dads) and has a LOT of cool ideas to teach your kids science in a way they will love.
Oh, and one of the dad's write about his wife homeschooling the kids. Very interesting: http://blog.wired.com/geekdad/2008/05/legos-bugs-and.html
