Show children a picture diagram of the human voice. The diagram should include images of the mouth, larynx, vocal cords, trachea, lungs and diaphragm, which all contribute to the voice. Point to each part of the anatomy on the diagram -- for example, the lungs -- and ask the children to point to that part of their bodies. This is an exercise in teaching kids to identify the parts of their bodies that make up the vocal anatomy.
Talk to children about how the mouth, larynx, vocal cords, trachea, lungs and diaphragm work together as a group to produce the voice. For instance, the diaphragm supports the flow of air produced by the lungs, which travels up the trachea and to the throat where the larynx and vocal cords are -- near the Adam's apple. The vocal cords resonate from the air and produce the voice.
Try an activity that lets children use their voices to understand the flow of vocal anatomy. Tell the kids to take a deep breath, hold it for three seconds and blow the air out through their mouths as slow as possible. Explain to them that the air is being controlled by their lungs and the muscles in their backs, abdomens and diaphragms. For the next deep breath, have the children make a noise like "hah" or "oh" as they release the air.
Ask the kids if they've ever lost their voices from yelling too much or singing too loudly. Discuss how the vocal cords and larynx can become damaged from too much strain and stress to the throat muscles.
Pass out vocal anatomy worksheet diagrams for kids to color. Leave the parts of the anatomy unlabeled and host an activity where the kids have to draw a line to each part in the anatomy and write the name, such as vocal cords or lungs.