7How can 26 letters spell big success? When a child recognizes and understands letter combinations it gives reading and writing a huge boost. You can tell it when they can spell it! The proven activities in Big Spelling 1-3 will help your child be successful in school by teaching spelling patterns, word recognition, letter sounds, and more. With focus on essential first, second, and third grade spelling skills and over 300 pages of practice, your child will work and learn for many happy hours.