"Fluency is defined as the ability to read with speed, accuracy, and proper expression. In order to understand what they read, children must be able to read fluently whether they are reading aloud or silently. When reading aloud, fluent readers read in phrases and add intonation appropriately."
-ReadingRockets.org
Reading fluency is one of the most important components of reading comprehension. Use the "Fluency Packet" from Achieve the Core to help your child practice their reading fluency. You can also access other tips and strategies for building reading fluency on this website: https://www.readingrockets.org/helping/target/fluency#do_kids