This 20 slide PowerPoint mini-lesson introduces the voiceless sound of "th." There is a link to a TH song online. Then, there is a thumbs up, thumbs down sound activity incorporated into the presentation. There is a list of "th" words to print out and use with this activity on the final slide. In the next section of the presentation, there are two pictures and students must determine which one makes the TH sound. After that, you can have students come up and circle or underline "th" words in sentences. Finally, there are nonsense word slides.