This teacher resource supports the Bells work by bridging sensorial discrimination and music theory, offering structured lessons that connect sound matching and grading to formal notation. Designed for the 6–9 classroom, it gives directresses a clear pedagogical pathway from the sensorial foundation of the Bells into reading and writing musical symbols. It's particularly useful for teachers who want to extend the Bells beyond tone matching into a coherent musical literacy sequence without leaving the Montessori framework.