If you need help making the /s/ sound, watch this video. Remember to keep your tongue behind your teeth and let the air flow out of the front of your mouth.
If you need help making the /z/ sound, watch this video. Remember to keep your tongue behind your teeth and let the air flow out of the front of your mouth. Your voice should be on to make the buzzing sound!
To practice speech sounds at home, try to aside 15 minutes a few times a week. Spend the first 3-4 minutes going through a word practice list. Then try practicing the sounds in a more natural activity, such as reading aloud or playing a simple game. See the Articulation page for more practice activity ideas.
I have lots more where this came from! I have many more resources that I just can't legally share on this public site. To request more materials for your child's specific goals, contact me! I will email them directly to you.