Cryptography learning in the Network Security
subject is still dominated by theoretical explanations and manual exercises,
causing students to experience difficulties in understanding the encryption and
decryption processes. The learning media used is also not fully supportive,
resulting in low student engagement during the learning process. Therefore,
appropriate learning media is needed to help students understand the material
more easily. This study aims to develop a cryptography learning web for the Network
Security element and to determine the difference in student learning outcomes
between classes using the learning web and those using conventional learning.
This research uses the Research and Development (R&D) method with the ADDIE
model, consisting of analysis, design, development, implementation, and
evaluation stages. The study was conducted on Grade XI TKJ 1 students as the
control class and Grade XI TKJ 2 students as the experimental class at SMK
Negeri 2 Surabaya. Data collection techniques included observation, expert
validation, pretest-posttest, and documentation. The results showed that the
learning web obtained a media validation score of 89.27%, lesson plan
validation of 90.95%, material validation of 81.48%, and test item validation
of 91.11%, all categorized as very valid. The Mann-Whitney U Test result was U
= 1037; p < 0.001, indicating a significant difference in learning outcomes
between the experimental and control classes. Based on these results, it can be
concluded that the cryptography-based learning web is feasible and can improve
student learning outcomes in the Network Security element.
Keywords: learning web, cryptography, network
security, learning outcomes, ADDIE