Duolingo provides student paced study practice to learn a language. Duolingo also provides teachers with control to assign units that relate to class language instruction. These units support interpretive, interpersonal, and presentational focuses that align with world language standards, including a series of vocabulary activities, comprehension assessments, and listening opportunities. Duolingo is a fun learning experience for the students because students think they are playing a game. Duolingo is available in app format as well as an online tool. Duolingo can be used to supplement language practice time either in school or at home.