The latest online curriculum comes from Kids Discover Online, a repository of online science and social studies content. Because it’s browser-based, Kids Discover can work with just about any recent computer and delivers 100 common topics with material at three different reading levels that range from ancient Greek to ecology. Aimed at K-through-8th grade, the service starts with the latest news items in each area and the content is chock full of interactive elements, infographics and visual representations of the relationships between topics.