Abstract: A method and system for incrementally revising designated portions of content contained in a medium to provide a new edition and/or a revised edition of the medium, the method including assigning a unique identifier to each element of the content contained in the source version; creating for each element of the content, at least one of a change set file, a logical content store file, or a definition file; receiving from a first author a first modification to a discrete portion of the content, the first modification further comprising: a logical intent of the first author for the first modification, a purpose of the first author for the first modification, or a goal of the first author for the first modification; storing the first modification in a corresponding first change set file; receiving from a second author a second modification to the discrete portion of the content, the second modification further comprising: a logical intent of the second author for the second modification, a purpose of the second a

Abstract: Described herein are embodiments of systems, methods, apparatus and computer program products that accept student input and use a computer to process its mathematical meaning. The input can then be algorithmically tested for certain mathematical criteria. Those test results then allow the system to output immediate assessment, grades, and feedback.

Abstract: The present inventor devised, among other things, information retrieval systems, methods, software, and related interfaces that help users assess and if necessary bolster the quality of their manual selections from search results. One exemplary system receives a set of documents selected from search results for an input query, identifies key subjects in the selected documents, and outputs a graphic, such as a pie chart, that shows not only how well these selected documents relate to the query, but also whether there are gaps in the topical scope of the selected documents related to the input query.

Abstract: A learning content delivery system is provided that includes a network, a plurality of remotely stored content delivery applications each having learning content, one or more user devices, and a platform. The platform has an application framework that allows the one or more user devices to access the remotely stored applications and learning content via the network. The applications can include at least two platform specific applications, which are developed on a common application programming interface. The platform can dynamically sense one or more attributes of each user device and to customize presentation of the learning content from the platform specific applications for the user device. The application framework can provide two-way awareness between the platform and the platform specific applications.