Real world problem: You and your friends want to send messages to each other across a long distance (a soccer field, a lake, etc) during the day. It’s too bright outside to see each other’s flashlights. How could you communicate to each other using objects from your surroundings?
- Students are able to articulate ideas on how they could communicate with their friends across long distances.
- Students are able to organize, represent, and interpret data between the categories of pitch and loudness.
- Students can plan and conduct investigations to provide evidence that vibrating materials can make sound.
- Students can plan and conduct investigations to provide evidence that sound can cause materials to vibrate.
For the design challenge at the end of this unit, students will be asked to create devices that allow them to communicate using sounds rather than speech. To prepare for the challenge, students will be learning how different sounds can be created by various vibrating materials. They will learn that sound pitch and volume can change depending on the size of vibrating object. To learn these concepts, students will conduct tests on various objects in their school and home environment and classify these objects by pitch and loudness.