Convey a concrete understanding of equivalencies using our color - coded Rainbow Fraction Teaching System. Supports addition, subtraction, multiplication and division of fractions, decimals and percents. Teaches equivalencies using relationally sized cards that are color - coded so equivalent values match (e.g. 50 percent, 0.5 and 1/2 are all pink), with enough of each size card to equal 1 whole Includes 153 cards with numerals on one side and number words on reverse, 2 double - sided title cards, plus Activity Guide. Flame - retardant nylon chart with hanging grommets and reverse - side card storage pocket measures 20"L x 27"H Grades 1+