Abstract: A computing device, having a user input interface including an input button, processes a sentence array including component words of a target sentence string to determine at least one target word to be read by the user. The computing device detects press and hold by the user of the input button, and in direct response, receives and processes user speech input to recognize at least one spoken word, and upon recognizing the at least one spoken word, determines whether the user has correctly read the at least one target word. The computing device also detects release by the user of the input button, and in direct response, identifies a context position relative to the target sentence string, and processes at least one predefined action based on the identified context position.