1. Bartolomeo, L. (2023). Flashnote derby (Version 3.3.1). [Mobile app]. App Store. Retrieved July 19, 2023, from https://apps.apple.com/us/app/flashnote-derby-musical-note/id453126527
2. Better Day Wireless, Inc. (2023). Piano infinity (Version 2.2.1). [Mobile app]. App Store. Retrieved July 19, 2023, from https://apps.apple.com/us/app/piano/id485362757
3. Boling, E. (2010). The need for design cases: Disseminating design knowledge. International Journal of Designs for Learning, 1(1). https://doi.org/10.14434/ijdl.v1i1.919
4. Boling, E. (2021). The nature and use of precedent in designing. In R. E. West & J. K. McDonald (Eds.), Design for learning principles, processes, and praxis. EdTech Books.
5. CAST (2018). Universal Design for Learning Guidelines version 2.2. Retrieved December 1, 2022, from http://udlguidelines.cast.org