We chose the letters/sounds order by looking at the most common phonemes. We also wanted to intentionally focus Module 1 on 8 unique sounds that are all made with different parts of the mouth.
For the 2023-24 school year, we’ve kept the same order of phonemes and letters as tested in our research studies.
We know that most teachers will be using SoundTown as a complement to another literacy curriculum, and that each curriculum has their own order of letter/sound introduction. In future use of SoundTown, you are welcome to change the order of letters/sounds you introduce based on your curriculum needs.(Roberts, T.A., Vadasy, P.F., & Sanders, E.A. (2020). Preschool instruction in letter names and sounds: Does contextualized or decontextualized instruction matter? Reading Research Quarterly, 55(4), 573-600. https://doi.org/10.1002/rrq.284 (choice of alphabet content p578))