WAC stands for "Writing Across the Curriculum," an educational movement aimed at improving students' writing skills in all subjects, not just in English classes. The idea is that writing is a crucial tool for learning and understanding content in various disciplines, such as science, history, and mathematics. By incorporating writing assignments into these subjects, students can enhance their critical thinking and communication abilities. The WAC approach encourages teachers to use writing as a method for students to express their understanding and engage with the material. This can include activities like journals, essays, and reports, which help students articulate their thoughts and deepen their comprehension of the subject matter.