1<?php //get first level child pages 
2		$mypages = get_pages( array( 
3		'child_of' => $post->ID, 
4		'sort_column' => 'menu_order',
5		'parent' => $post->ID ) );
6	  	foreach( $mypages as $page ) {
7	  		$mycontent = $page->post_content;
8		 	$mycontent = apply_filters( 'the_content', $mycontent );
9 		?>
10<!--if has children, add div in the parent section for each child otherwise no div -->
11<?php
12      $childArgs = array(
13          'sort_order' => 'ASC',
14          'sort_column' => 'menu_order',
15          'child_of' => $page->ID
16      );
17      $childList = get_pages($childArgs);
18      foreach ($childList as $child) { ?>
19        <div class="grandchild-page">
20        <h2><a href="<?php echo get_page_link( $child->ID ); ?>"><?php echo $child->post_title; ?></a></h2>
21        </div>  
22    <?php } ?><!--end grandchildren-->
23<?php } ?>
24<?php endwhile;  
25   endif; ?>