Students will understand that sound is produced by vibrating objects and that the pitch of the sound can be varied by changing the rate of vibration. Which of the following activities best supports the second-grade content objective above?

While this activity engages students' auditory skills, it does not involve producing sound through vibration or exploring how pitch varies. Instead, it focuses on sound localization, which does not meet the content objective regarding the production and variation of sound pitch.

This activity promotes understanding of sound transmission and the concept of sound waves but does not directly involve producing sound through vibrating objects or demonstrate how the pitch can change. It emphasizes communication rather than the mechanics of sound production.

Listening to recorded sounds can help students identify different pitches, but it does not actively engage them in producing sounds or manipulating vibrations. This approach lacks the hands-on experience necessary to understand how pitch is altered by changing the rate of vibration.