This study aims to analyze the use of the Al-Ma’any Online Dictionary in supporting the development of Arabic vocabulary mastery among students in PBA 2 class at UIN Sumatera Utara. The primary issue observed among students is the lack of optimal utilization of the online dictionary due to certain challenges in its usage. The focus of this research is to explore how students utilize the online dictionary to enrich their vocabulary and its impact on their Arabic language proficiency. This study employs a qualitative approach with a descriptive design. Data were collected through interviews with students, observations of dictionary usage, and analysis of student assignments. The findings indicate that the Al-Ma’any Online Dictionary is effective in helping students expand their vocabulary, particularly in discovering word meanings and their usage in various contexts. However, some challenges were identified, such as limited understanding of subtle word meanings and dependency on internet connectivity. This study suggests that vocabulary development through the use of online dictionaries can be optimized by providing guidance and further training for students in utilizing the dictionary's features more comprehensively.

Learning media is one of the important roles that learning brings to the successful achievement of educational goals. Books are the most basic media of the learning process as visual media. The purpose of this study is to determine the effect of the book Al'Arabiyyah Limahaarati Alkitaabah Fii Dhau'I Annadzriyyat Albinaaiyyah as a learning medium on maharah al-kitabah of Arabic Language Education-2 students in the 2021 batch of North Sumatra State Islamic University. This research is qualitative with a field research approach as well as a literature study. The results of the study show that the at-tadriibaat or the exercises themselves have a connection between the nahwu sharaf material and the maharah al-kitabah. Where, students are given the habit of writing ideas or sentences in Arabic through writing amtsilah or examples, at-tadribat or exercises, and insya' or composing assignments given every week.