If you just can’t bring yourself to pay the money for the Discovery Education Streaming, or if you just want to try it for a few months, take a look at Cosmeo. It is a pared-down version of Discover Streaming. It still has 30,000 videos and 150,000 reference articles, along with pictures, math tutorials and games. Great for K-8 and only $9.95/month. You can also get one month free to try it out.