All your students are working on a task you have given them. A couple of students have finished before everyone else as they work quicker but accurately. Now what?
Give your higher performing students an extension task: Give them a text (it could be a text that you have worked on previously, depending on your students’ levels) with mistakes to be corrected. For example, find 6 errors in this text (could be grammar, orthograph, punctuation) and correct them.