Contains many useful tools and services for history teachers. There are online experts for tutoring and some good-quality sources. Looks like it's going to get even better.
This article suggests using 'wordle' to create a 'word cloud' from a selected text. It works really well in historical sources (or modern articles) for bringing out key terms. It's also a really efficient way for students to 'scan' a text to see if it might be relevant when researching - particularly for those who read slowly, or for ESL students who are daunted by large blocks of text - and it looks very nice too!
This seems to update with interesting topics that students might find relevant for research or for classroom activities. I use Bloglines to subscribe to the feeds on sites like this (Google Reader is also good) and that way I only have to go to one site to keep up to date.
"The modern world exists in a state of cultural, political, and economic globalisation. During the fifteenth and sixteenth centuries two nations, Portugal and Spain, pioneered the European discovery of sea routes that were the first channels of interaction between all of the world's continents, thus beginning the process of globalisation in which we all live today. "