This resource focuses on distinguishing between casual and professional communication tones, particularly in textual contexts such as messages and emails. Students will engage in a comparative analysis of informal and formal communication through examples, identifying markers of informality like slang and abbreviations. Using the See-Think-Wonder routine, students will explore how these informal markers impact the message's effectiveness and articulate the expectations around professional communication in the workplace. Additionally, a T-chart will facilitate a contrast of linguistic features between an informal text and a professional email. Finally, a reflective discussion encourages students to consider how casual language might influence perceptions of professionalism in job applications.