The following sites provide practice for learning fractions: equal parts of a whole and equivalents.
Fractions
Flowering Fractions http://classroom.jc-schools.net/basic/math-fract.html
http://www.harcourtschool.com/activity/cross_the_river/
http://www.oswego.org/ocsd-web/games/fractionflags/fractionflags.html
http://www.harcourtschool.com/activity/con_math/g03c21.html
Spelling City