Red words are sometimes referred to as sight words, learned words, and memory words.  Some red words will eventually be decodable by students as they continue with this scope and sequence.  Others will always be referred to as red words.  Students learn red words by writing them out, saying each letter (not letter sound), and then saying the word.  They must repeat the procedure at three times and continue practicing those words.  Caregivers should help the students read the red words until they are automatic.  It takes time!