In a Page Template (I ripped wp-content/themes/default/page.php) with a loop showing the parent page content:
<?php
/**
* @package WordPress
* @subpackage Default_Theme
*/
/*
Template Name: ChildPages
*/
?>
<?php get_header(); ?>
<div id="content" class="narrowcolumn">
<?php
?>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<div class="post" id="post-<?php the_ID(); ?>">
<h2><?php the_title(); ?></h2>
<div class="entry">
<?php the_content('<p class="serif">Read the rest of this page »
'); ?>
<?php wp_link_pages(array('before' => '<strong>Pages:</strong> ', 'after' => '
', 'next_or_number' => 'number')); ?>
</div>
</div>
<?php
$wlp=wp_list_pages('echo=0&child_of=' . $post->ID . '&title_li=');
if ( !empty( $wlp ) ) {
echo $wlp;
}
?>
<?php endwhile; ?>
<?php endif; ?>
</div>
<?php get_sidebar(); ?>
<?php get_footer(); ?>