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This paper describes a new and unique vision for electronic textbooks. It incorporates a number of active components such as video, code editing and execution, and code visualization as a way to enhance the typical static electronic book format. In addition, the textbook is created with an open source authoring system that has been developed to allow the instructor to customize the content of the active and passive parts of the text. Initial results of a semester long trial are presented as well.
Miller et al. (Tue,) studied this question.