Abstract: A method and system for teaching a user a target language includes developing and constructing variable potential paths of nodes representing an exchange between two participants in a dialogue, prompting and selecting a path of nodes through a conversation graph of the target language, the path of nodes defining a dialogue; and determining whether the user is ready to perform the dialogue that has been constructed and defined by the path of nodes, the determination being based on a user model which represents the user's current ability in and current knowledge of, the target language. If the user is ready to perform the dialogue, the path of nodes is executed to allow the user to perform the dialogue defined thereby; and if the user is not ready to perform the dialogue, training the user on one or more nodes of the path of nodes.

Abstract: A method of teaching a language to a student by an instructor is disclosed, wherein the method may include the steps of the instructor uttering a first prompting phrase to the student; receiving a first response from the student in response to the first prompting phrase; modifying at least one characteristic of the first prompting phrase to generate a second prompting phrase; and the instructor uttering the second prompting phrase to the student, wherein at least one of the above steps is performed using a computer.