Digital
literacy, from a cognitive perspective, refers to the access, skills, and
functional practices necessary to utilize technology effectively for personal,
academic, and professional purposes. It plays a vital role for senior high
school students by equipping them with the ability to use technology wisely,
search for valid information, and develop critical thinking skills that support
learning and daily activities. To address this need, this research aimed to
develop an interactive e-book on the topic of TOGA (family medicinal plants)
diversity to train students digital literacy skills. The e-book was developed
using the 4D model, which includes the Define, Design, Develop, and Disseminate
stages. Research parameters included validity, practicality, and effectiveness.
Validity was determined through expert judgment, practicality was assessed via readability
tests and responses from teachers and students, and effectiveness was measured
through concept mastery tests and the implementation of digital literacy
indicators. Data were analyze quantitatively using descriptive statistics. The results showed that the e-book achieved a
high validity score of 3.8, indicating highly valid in content, presentation,
and language. Practicality was demonstrated through a readability score at
level 10, with positive responses from teachers (100%) and students (98.5%).
Effectiveness was evidenced by a concept mastery score of 88.3% and a digital
literacy indicator score of 3.86, both classified as very good. Therefore, the e-book
is considered a valid, practical, and effective medium for enhancing student
digital literacy.
Keywords: digital literacy, e-book interactive,
biodiversity plan, validity, practicality, effectiveness