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Digital textbook is an electronic version of printed books which has been popular in education. Several related studies had confirmed the advantages of using digital textbook for ESL learners. This study was conducted to explore the effectiveness of digital textbook in increasing learners’ proficiency in English as well as the learners’ and teachers attitude towards digital textbook. The quantitative study with fifty seven participants was a true experimental research which applied pretest-posttest control group design. Having two groups of participants (experimental and control), this research was conducted by selecting the participants randomly, administering pretest, giving treatment, administering posttest, analyzing the data and interpreting the results. This research found that even though data was not normally distributed, the data still had the same variances. Therefore, the independent t-test in this research used Wilcoxon Signed Rank Test. The results discovered that the t value was 0.030 which was lower than 0.050. It indicated that the treatment was significantly effective in this research. In other words, this research revealed that digital textbook had contributed positively to the learners’ English achievement as it was seen from the better performance of the experimental group than the control group. Then, the qualitative study of this research interviewed three participants and one lecturer. Most of the participants shared the same opinion that digital textbook had positive contribution for their ESL class.

Digital Text Book: A State of The Art Learning Resource to Increase Learner’s Achievement