Independent reading lets students practice strategies that they learned during the other instructional contexts along the gradual release of responsibility. During independent reading, students read from texts on their independent reading level or texts that are easy enough for them to decode and understand without a lot of effort.
Reading volume is correlated with reading achievement( Stanovich, 1986). Thus, teachers should provide students with time to engage in wide, independent reading not only to build their background knowledge and vocabulary , but also to provide spaced practice for developing fluency. (effect size for spaced versus mass practice 0.71 and wide reading 0.42)