Sound and Pitch - Lesson Plan

The lesson on Sound and Pitch, aimed at Key Stage 2 students, explores the fascinating relationship between the pitch of a sound and the characteristics of the object producing it. Students delve into the concept of pitch, learning that it refers to the 'squeakiness' or frequency of a sound and that it is distinct from loudness. They build on previous knowledge that sounds originate from vibrations and that different objects create diverse sounds. The curriculum links to Year 4 and 5 topics, such as states of matter and properties of materials, and includes cross-curricular ties to Design Technology and Music. Health and safety considerations are outlined, ensuring a safe learning environment when experimenting with sound.

During the lesson, students engage in hands-on activities using simple materials like balloons, straws, and glasses to investigate how pitch can be altered. For instance, by rotating a balloon with a hexagonal nut inside, they observe changes in pitch with the speed of rotation. They create pitch straws and pan pipes, discovering how shortening the length of the straw or pipe raises the pitch. A glass orchestra experiment allows them to explore how water volume affects the pitch of sounds produced by glasses. This practical approach helps students understand the scientific principles behind sound production and manipulation. The lesson concludes with a plenary session where pupils reflect on their learning, discussing the meaning of pitch, its difference from loudness, and the relationship between pitch and frequency.