Abstract: A method is provided for teaching students to recognize and correct incomplete sentences (also referred to herein as “sentence fragments”). A user is presented with one or more user interfaces that teach a user to determine whether a sentence is a complete sentence or an incomplete sentence. The interface may present an explanation as to why the sentence is a complete sentence or an incomplete sentence. To help a user deduce whether a sentence is a complete sentence or an incomplete sentence, one or more interfaces may present a user with one or more detailed questions about the sentence. The one or more detailed questions may ask the user to identify one or more particular features and/or words in the sentence. A user may be presented with one or more user interfaces that teach the user how to produce a complete sentence from a sentence fragment.