Teach some of the uncertain structural elements (8)

I believe the answer is:

instruct

'teach' is the definition.
(I know that teach can be written as instruct)

'some of the uncertain structural elements' is the wordplay.
'some of' indicates the answer is hidden within the clue.
'INSTRUCT' is hidden within 'uncertain structural elements'.

(Other definitions for instruct that I've seen before include "Teach or give orders to" , "Give lesson or order to" , "Command; teach" , "Coach" , "Impart skills or knowledge to" .)

I've seen this clue in the Sydney Morning Herald.

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