Unique flash cards help meet the needs of individual student learning levels while keeping materials well organized.These color-coded cards make it easy for students to work at their own pace and build self-esteem as they master sets of sight words. The pull-apart ring system enables students to focus on word groups and easily sort and store cards by color. Details:Multicolor2.5" x 4"169 cards, 2 storage ringsDesigned for grades K-1