Abstract: A context-sensitive and location-aware adaptive method and device. The method includes determining user's information relating at least one of context or location, adaptively altering at least one of data and image based on the determined user's information, and presenting the altered information.

Abstract: A method for operating a classroom network including a host computer and a plurality of digital devices communicatively coupled to the host computer is provided. The method includes receiving student responses by the host computer from the plurality of digital devices over a period of time, wherein the student responses are generated while performing a class activity on each digital device, storing the student responses as the student responses are received, and replaying a user selected portion of the stored student responses on the host computer, wherein the replayed student responses are displayed according to a first user specified analysis view.

Abstract: An electronic device capable of graphical data analysis is provided. The device includes a processor capable of manipulating numerical data and a graphical data. An input is provided for issuing instructions to the processor to manipulate the numerical data and graphical data. The device includes a memory device, a software program, and an output. The memory device is for storing graphical data and numerical data. The software program is stored in the memory device and is operable for dynamically linking the numerical data and graphical data, such that when the numerical data is updated the software automatically updates the linked graphical data, and vice versa. The output is operable for displaying graphical data and numerical data.

Abstract: A device operable to maintain a document comprising a processor, a first problem space including a first variable having a first value, and a second problem space including a second variable having a second value, the first and second variables and the first and second values stored such that when the first variable is: the same as the second variable and the first value is different that the second value, the second value is maintained when the processor modifies the first value.