Teacher's action is helpful to trigger deduction processes in some contexts.

see syntactic example
see lexical example

The teacher must encourage rephrasing when the meaning is understood without the proper original wording being reached, mark other solutions as acceptable even if machine-rejected.

rephrasing example

Also

encourage inline help.

explain meaning.

show one cannot be efficient without understanding the text.

adjust settings, synchronize, ...

see also task-specific notes: build and spot.