Best Answer James B† , 07 December 2012 - 11:52 PM
Yes you could look into a widget to get the child pages to show in a menu on the sidebar. I've copied some in below for you that I've found on a quick google search, you might find more though on the wordpress codex.
To turn widgets on and off on a per page basis you'll need a plugin called widget logic, which i've copied in below for you .
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