Students examine the structure and function of the organs involved in hearing and speech.
They identify what the organs require to work, investigate and explain ways to protect these organs from damage, and consider how technology has affected these organs. Students may construct models, create megaphones or telephones, or use sign language and speakers or other technologies to explore these organs and enhance their understanding of how to keep their bodies working properly. Learning Activities Students create a megaphone and ear trumpet to investigate how a cone can be used to concentrate and direct sound. Working in threes, students collect assorted small objects found at school or brought from home. One of the group is blindfolded while another drops each object onto a table.