Teachers should introduce the "ou" sound through flashcards or posters. They should make a gesture related to the sound, such as mouthing "ou", while making the sound to help students recognize it. Songs that include words with the target sound can help students learn, as learning is improved when combined with singing. Students also learn to write sounds by writing words that contain the target sound in relation to pictures, such as writing "ou" for pictures of "out" and "pound".