As I’m on my journey, I thought I’d start a ‘where to go’ section for myself (and you) for resources and lesson ideas. Referenced where possible!
We teach many idioms in ESOL, but I have never even thought of covering idioms in literacy, and I have no idea why.
I think it depends on the purpose of the activity to be honest, and its validity in a learner’s development. You could do a similar activity to the one above (but maybe with more relevant examples to them). They could make a fun coded idiom letter to a friend.
Differences between formal and informal English in the Adult ESOL Core Curriculum, p. 99. as suggested in SfLQI