The Heritage Explorer has several good interactives for learning about British History. 

They include The Burning of the Martyrs, related to the tension (to say the least!) between Protestants and Catholics several hundred years ago.  This is a particularly good activity for English Language Learners who are studying World History.  It shows an old woodcut of a scene, and then asks the user to identify several specific elements of the picture.

The site’s Tell and Test section is also good.  The interactives there show parts of castles and monasteries and are then followed by “drag-and-drop” tests for students to label the same parts.

I’ve placed the links on my World History page under the Later Middle Ages.