Show a page with child Terms when parent Term clicked in block? I want to Display child terms when a parent Term is clicked with Views in Drupal 7.
         Example

     Parent1
          .child11
          .child12

      Parent2
          .child21
          .child22
          .child23


So when Parent1 page is Visited, i will display the content of parent1 but with a block showing 

          .child11 
          .child12


Any insight in Achieving this will be Appreciated. Thank you.
Try the Views tree module. It is great for taxonomy trees.

This module provides a tree-based style plugin for Views. It is equivalent to the tree-based style template from Views 1.
It is based off of the list style. Although it generates a nested view, there is still only a single query run for the view making it quite performant.

There is also a patch for adding collapsible support but I'm not sure how complete it is. See http://drupal.org/node/1538414