Ponder about working model (11)

I believe the answer is:

contemplate

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'ponder' is the definition.
(I've seen this before)

'about working model' is the wordplay.
'about working' becomes 'con' (I can't explain this - if you can you should believe this answer much more).
'model' becomes 'template' (template is a kind of model).
'con'+'template'='CONTEMPLATE'

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(Other definitions for contemplate that I've seen before include "Ruminate on" , "Think seriously" , "Ponder" , "Consider" , "Intend" .)

I've seen this clue in The Telegraph.

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