This resource is focused on the importance of textual evidence in supporting claims. It explains why evidence is crucial for transforming opinions into persuasive arguments that can be trusted. Textual evidence is defined as proof taken directly from various sources such as books or articles to substantiate an idea. The document highlights core criteria for evaluating the quality of evidence, emphasizing relevance and sufficiency. It also differentiates between strong and weak evidence, providing examples to illustrate the differences. Furthermore, it includes sections on writing foundations for introducing evidence with key sentence starters, a writing practice exercise, and a self-correction checklist to ensure effective use of evidence in claims.