The (th) sound can be voiced or voiceless. To produce the voiceless (th) sound, put your tongue between your teeth and push air out. Helpers can model putting your tongue between your teeth while blowing air at the same time.
An alternative may be to produce an /h/ sound and stick your tongue out while slightly closing your mouth.
After you establish the (th) sound, practice this action with and without your voice on. You can put your hand on your throat and feel the vibration when your voice is turned on.
An alternative may be to produce an /h/ sound and stick your tongue out while slightly closing your mouth.
After you establish the (th) sound, practice this action with and without your voice on. You can put your hand on your throat and feel the vibration when your voice is turned on.