This whistle from Talk Tools® hierarchy in a form of small red train prepares for lip rounding; therefore, it is used for exercising the alveolar sounds and the “u” sound.
This whistle prepares for lip protrusion and rounding; therefore, it is used for exercising the alveolar sounds and sound of "u". It is the second level of protrusion and lip rounding exercises. Apply alternately with a tongue depressor to exercise the motor skills of the circular muscle.
This whistle from Talk Tools® hierarchy in a form of small red train prepares for lip rounding; therefore, it is used for exercising the alveolar sounds and the “u” sound.