I've recently started doing Speech Centers/Speech Stations for my articulation and phonology students. One station we use is a Listening Station. The kids listen to models of words, phrases, and sentences and then repeat them. Included in this PPT are 13 S and Z words in the initial and final position. Each picture models the word, then the phrase, and then a sentence, with a long pause between each so that the student has time to repeat it. I love (and so does my administrator!) that the kids can get independent practice with models of correct production. Try it!
If you like this, check out my other individual PPTs and a bundle of all my PPTs!
http://www.teacherspayteachers.com/Product/Bundle-of-Articulation-PowerPoints-with-Audio-1476748 (BUNDLE & SAVE!)