A method, comprising: at an accessible electronic device with a touch-sensitive surface and a display : mapping at least a first portion of the display to the touch-sensitive surface ; concurrently displaying a plurality of user interface containers on the display ; detecting a user interface container selection event that selects a first user interface container in the plurality of user interface containers , wherein the first user interface container includes a plurality of user interface elements ; in response to detecting the user interface container selection event: outputting audible accessibility information associated with the first user interface container; ceasing to map the first portion of the display to the touch-sensitive surface and proportionally mapping the first user interface container to be substantially coextensive with the touch-sensitive surface , and while the first user interface container is proportionally mapped to be substantially coextensive with the touch-sensitive surface, detecting a first user interface element navigation gesture on the touch-sensitive surface, wherein the first user interface element navigation gesture contacts an area of the touch-sensitive surface to which at least one user interface element of the plurality of user interface elements is mapped; and in response to detecting the first user interface element navigation gesture, outputting audible accessibility information associated with the at least one user interface element of the plurality of user interface elements . mapping at least a first portion of the display to the touch-sensitive surface ; concurrently displaying a plurality of user interface containers on the display ; detecting a user interface container selection event that selects a first user interface container in the plurality of user interface containers , wherein the first user interface container includes a plurality of user interface elements ; in response to detecting the user interface container selection event: outputting audible accessibility information associated with the first user interface container; ceasing to map the first portion of the display to the touch-sensitive surface and proportionally mapping the first user interface container to be substantially coextensive with the touch-sensitive surface , and while the first user interface container is proportionally mapped to be substantially coextensive with the touch-sensitive surface, detecting a first user interface element navigation gesture on the touch-sensitive surface, wherein the first user interface element navigation gesture contacts an area of the touch-sensitive surface to which at least one user interface element of the plurality of user interface elements is mapped; and in response to detecting the first user interface element navigation gesture, outputting audible accessibility information associated with the at least one user interface element of the plurality of user interface elements . outputting audible accessibility information associated with the first user interface container; ceasing to map the first portion of the display to the touch-sensitive surface and proportionally mapping the first user interface container to be substantially coextensive with the touch-sensitive surface , and while the first user interface container is proportionally mapped to be substantially coextensive with the touch-sensitive surface, detecting a first user interface element navigation gesture on the touch-sensitive surface, wherein the first user interface element navigation gesture contacts an area of the touch-sensitive surface to which at least one user interface element of the plurality of user interface elements is mapped; and in response to detecting the first user interface element navigation gesture, outputting audible accessibility information associated with the at least one user interface element of the plurality of user interface elements . <EOS>