2009 Cardboard Boat Race http://www.youtube.com/watch?v=DIFzpyXPeiU
7.1 What Is Plasma? http://www.plasmas.org/what-are-plasmas.htm
7.2 Solid Matter http://www.visionlearning.com/library/flash_viewer.php?oid=1435&mid=120
7.2 Liquid Matter http://www.visionlearning.com/library/flash_viewer.php?oid=1434&mid=120
7.2 Gaseous Matter http://www.visionlearning.com/library/flash_viewer.php?oid=321&mid=120