The sound level thresholds are read as "clickable".
It is not clear if the reader is reading messages sent from the micro:bit, or messages sent to the micro:bit by the user.
The compass heading slider in the expanded compass module is missing a label. The reader reads "slider 0", rather than "compass heading slider 0".
The reader reads the compass heading slider value in the collapsed compass module twice. E.g., "compass heading slider 00". Edit: This is because the tooltip is being read as well as the input value separately.
Screen readers: