Second language (L2) writing instructors have varying tools at their disposal for providing feedback on students' writing, including ones that enable them to provide written and audio feedback in electronic form. One tool that has been underexplored is Turnitin, a widely used software program that matches electronic text to a wide range of electronic texts found on the Internet and in the program's massive repository. While Turnitin is primarily known for detecting potential plagiarism, we

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... ve that instructors can make use of two features of the program (GradeMark tools and originality checker) to provide formative and summative feedback on students' drafts. In this article, we use screenshots to illustrate how we have leveraged Turnitin to provide feedback to undergraduate L2 writers about their writing and use of sources. We encourage instructors who have access to Turnitin to explore the different features of this tool and its potential to create opportunities for learning.