The fluency that is defined by NRP is that read orally, clearly and fluently with accuracy and maintained the expression as well is called fluency. Fluency is a crucial part of the learning process. According to the Wolf Fluency work with three main part of research:
<u>Retention:</u> As we know it is the process of memory that play a role in recalling the knowledge that a person store in their memory.
<u>Stamina:</u> A person can maintain work performance for a long time.
<u>Generalization:</u> It is the combination of both retention and stamina