As a result of these experiences, students begin to understand how humans hear sounds and how sounds are made. Activities Students listen to and describe a variety of sounds, then try to identify their pitch, quality, and intensity. Students could then use tuning forks to explore the vibrations that make sounds. Students explore how sound changes as it travels through various materials. Students make a telephone using cups and string to explore how sound travels.
Students design ways of changing the sound of their voices.
They use different objects to talk through and explain why each object made the resulting change in sound. They demonstrate their scientific skills and processes by conducting investigations, recording their findings, and presenting their results. Skills and processes The teacher gives students three plastic bags, each with a bell inside. Students describe the sounds produced and explain how each material affected how the sound traveled. They record their observations and descriptions.