As part of my word study program, I use "Rainbow Words" to introduce and teach sight words within my classroom. Throughout the year, I introduce these words a few at a time, beginning with the red words. I then proceed through the words/colors in order of the rainbow: red, orange, yellow, green, blue, purple.
After printing this helper card, I cut it in half and glue onto a 9" x 6" piece of colored construction paper. I laminate the cards and give one card to each child to keep in their writing folder. This allows them to also access it throughout the day.