Wordle is an online tool that can be used in the classroom in various ways. It allows users to create word clouds by typing words and adjusting font sizes based on word repetition. Users can customize wordles by changing fonts, layouts, and color palettes. Teachers are instructed to create their own wordle lesson plan explaining how students will use wordles and including an example wordle for students. Students are assigned to create a wordle lesson plan and share it by the due date.