http://www.sheppardsoftware.com/mathgames/earlymath/fractions_shoot.htm
http://www.infoplease.com/math/knowledgebox/player.html?movie=sfw42848
http://www.hbschool.com/activity/bowling_for_fractions/bowling_fractions_new.swf
http://www.hbschool.com/activity/cross_the_river/cross_the_river.swf
http://e-learningforkids.org/Courses/EN/M0901/index.html
https://jr.brainpop.com/math/fractions/basicpartsofawhole/