Make Your Own Fraction Math Manipulatives
Donna Young's website is wonderful and she has printable fraction manipulatives. I like that hers have the fraction, percentage, and decimal form on each pie slice.
I printed the groups of four pies on a sheet using a different color construction paper for each fraction. I then covered the sheets with Contact paper and cut them out. One pie, out each group of four, I left whole. The other pies were cut into slices. A reused Chinese food container stores them all.