This is a great unit that allows learners to compose music digitally in GarageBand with iPads. This unit also embeds Music, ADST, and ELA curriculum.
This slide deck is an overview of Micro:Bits and an introduction to other processor boards such as Circuit Playground Express, Arduino Uno, and Adafruit Gemma. There are many resource links. The focus is using Makecode block coding in as many areas as possible. This was presented at VINLearn #3.