This lesson plan introduces the concept of tempo in music. It defines tempo as the speed of a song, which can be either fast or slow. The lesson will have students identify tempo through singing "Twinkle Twinkle Little Star" at different speeds. It also includes watching a video about tempo, imitating animal movements to demonstrate tempo, and grouping students to perform different tempos through clapping. The goal is for students to understand and be able to identify fast and slow musical tempos.