Curated OER
Incorporating Japanese Music into the Music Classroom
Fourth graders experience the music and arts of Japan as they explore the language and culture of the country in this lesson. A variety of musical elements from the culture are demonstrated.
Wikimedia
Wikipedia: Percussion
A basic article on percussion instruments lists several examples of percussion instruments, provides a distinction between membranophones and idiophones, and lists instruments that are tuned vs. ones that are not.