a confident graduate stands at a wooden podium delivering her valedictorian address to the assembled crowd. Her mouth is open mid-sentence with one hand gesturing expressively as words flow from her lips. The audience members in the front rows lean forward attentively, some nodding in agreement. Several graduates in caps and gowns smile and applaud as they listen to her inspiring message. Parents in the back rows cup their ears to hear every word clearly. the expression of thoughts and feelings through articulate sounds