"...Word Puzzle application is designed to meet high expectation of android development community
     by using technologies like smooth UI operation by OpenGL ES, lazy resource loader implementation for
     effective memory management, raw image control system implementation to avoid PNG parser defect
     in Android platform..."   Dec 4, 2009 etnews

     The Word Puzzle is designed to provide a fun way to learn basic English words for preschool children.
     Kids can study spelling and pronunciation with flash card and check achievement with word puzzle.
     Interesting visual and sound interaction with awarding system helps kids to keep learning.

     Check the details from this link.

     http://code.google.com/intl/ko/android/adc/gallery_winners.html