Abstract. Augmenting web pages with semantic contents, i.e., building a ‘Semantic Web’, promises a number of benefits for web users in general and learners in particular. Semantic technologies will make it possible to reason about the Web as if it was one extended knowledge base, thus offering increased precision when accessing information and the ability to locate information distributed across different web pages. Moreover, it will become possible to develop a range of educational semantic web services, such as interpretation or sensemaking, structure-visualization, support for argumentation, novel forms of content customization, novel mechanisms for aggregating learning material, and so on. In this paper we provide a framework to show how Semantic Browsers which use ontologies to identity important concepts in a document as a means of providing access to associated educational services can be used in conjunction with Knowledge Charts (ontologically permeated representations of a...