This document provides an introductory guide to argument writing for middle school students. It defines argument writing as taking a clear position on an issue with two sides that can be supported with facts or citations. Effective arguments have a claim, acknowledge counterclaims, and use evidence to convince the reader that the claim is true. There are different types of claims, such as claims of cause and effect, definition, values, or solutions, which can be made in an argument. Strong arguments also address counterclaims, provide textual support for the claim, and have a clear conclusion.