Rainbow Fraction® Circle Rings, Set of 5

These clear plastic rings fit around Fraction Circles to show the relationships among fractions, decimals, and percents (1/4 = 0.25 = 25%); to demonstrate the equivalence of minutes and fractional parts of an hour (15 minutes = 1/4 hour); and to express fractional parts of a circle in degrees (1/4 of a circle =90°). Each of the five rings in the set is divided into equal intervals and contains a well-marked scale.