“The understanding that words are made of sounds and sounds are written with letters in the right order. Students who understand this can blend sounds associated with letters into words and can separate words into component sounds for spelling and writing.
Students should be assessed to determine if they can hear sounds in spoken language prior to letter-sound instruction.”
Excerpted from: Turkington, Carol, and Joseph R. Harris, PhD. The Encyclopedia of Learning Disabilities. New York: Facts on File, 2006.