Reading Skills Builder Levels 1 to 3 lets your child practice essential reading strategies in meaningful ways while improving fluency and comprehension. Phonics knowledge has a positive effect on your child’s ability to decode words and is a reliable predictor of later skill in reading comprehension. Sight word knowledge is also necessary for reading fluency and comprehension. As your child learns to recognize sight words with accuracy and automaticity, he reads more smoothly and at a faster rate. For use with Grades K-1.