http://www.visualfractions.com/index.htm
http://www.amathsdictionaryforkids.com/dictionary.html
http://pbskids.org/cyberchase/math-games/mission-magnetite/
http://illuminations.nctm.org/ActivityDetail.aspx?ID=18
http://illuminations.nctm.org/ActivityDetail.aspx?ID=80
http://new.mathmastery.com/math/fractions/Fractions-Basics/Fractions-More-than-One-Less-than-One-and-Equal-to-One
http://www.jamit.com.au/htmlFolder/app1003.html