University of Cambridge
University of Cambridge: Nrich: Fractional Triangles
On this one page website sharpen your logic and equivalent fraction skills while working on this challenge. The solution is available to double check your solution.
Math Medics
S.o.s. Math: Building Fractions
Explains step-by-step how to build equivalent fractions. Gives examples and exercises to practice this skill.
Other
Visual Fractions: Rename in Higher Terms With Circles
Practice renaming fractions in higher terms using circle fractions, in this Java applet interactive game. A simple activity for most. However, if you get stuck, see the detailed, directions and examples that are included.
BBC
Bbc: Bitesize Revision: Equivalent Fractions
This is an excellent place to learn about equivalent fractions. There is an interactive exploration of what equivalent fractions are. There is also an explanation and example of how to find equivalent fractions followed by a quiz.