Effect Alanysis of Digital Textbook on Ability of Self-Directed Learning

In this paper, I research about if the digital textbook has an effect on ability of self-directed learning that many Korean has an interest in. In order to know if the digital textbook has an effect on ability of self-directed learning, I measure the ability of self-directed of students up twice. I found that digital textbook have a effect on ability of self-directed learning.