In this exercise, ...
... learners are asked to detect a real smile.
This is inherently challenging and engaging ...
... and makes learners want to ...
... read the article that follows, ...
... about real and false smiles.
To check understanding ...
... of what they have read, ...
... learners receive guiding feedback on each answer, ...
... not just correct/incorrect feedback.
Learners then choose ...
... the best summary of the article ...
... before focusing on useful language it contains.