A Grade 5 learner could read the words of the story but read the words individually and in a choppy manner. She was unable to respond to the teacher’s request that she read with expression and more fluency. Once she heard herself read using the Sebezaphone, she immediately was able to read as she spoke: fluently.
It seems that up until that point she was not aware of how she sounded when reading, so the teacher’s guidance didn’t have any meaning until she discovered for herself.
Sebezaphone Leaflet