Instructional Materials - Unit 1.2 Waves: Sound

Have you ever heard a sound and wondered what it means? Or how it was made? This unit begins with a shared experience of observing a clocktower (dong! dong!) making and sending a sound signal that people use to communicate the time. In the first part of the unit, students plan and conduct investigations to produce evidence to answer their questions about how objects make sounds and how we can know that sounds travel and are received. Students gather evidence that vibrating objects make sound and sound can make other objects vibrate. They use this evidence to develop a model for how the clocktower makes and sends sound that people can hear. In the second part of the unit, students identify messages people send using sound signals in their communities and decide that they want a better way to send good news messages across their classroom. Students then engineer their own sound signal devices by planning, building, and testing designs they can use to communicate good news to all of their classmates! The material is distributed in accordance with the CC BY-NC. See details at: https://creativecommons.org/share-your-work/cclicenses/