Use Co-Articulation

If the child can do it at the end of certain words, try putting together a word that ends with the voiced sound right before a word that begins with it

Yoga Breathing

Practice Bumble Bee Breathing (yoga for kids).  Here’s an example:

Adaptations:

• Hand over voice box to hear/feel the vibrations
• Do some breaths with voice and some without
• Talk about turning on and off the vocal folds

Then, try doing this same exercises with other sounds (s/z, sh/zh, th/th, f/v).  Start with easiest pairs first and move to more difficult ones