computer. On the other hand, writing is a mental work of inventing ideas, thinking about how to express them, and organizing them into statements
and paragraphs that will be clear to a reader.
The purpose of writing is to express an idea or feeling and it can be called as a process and a product. The writing process include the process of imagining,
organizing, drafting, editing, reading, and rereading, then the product can be in the form of essay, letter, story, and research report. According to Nation, the
students’ fluency of using vocabulary can be improved through productive skills, i.e. speaking and writing skills Richard and Renandya, 2002: 269.
2.2 Theoretical Framework
Vocabulary is a set of words which are learned when people want to learn a new language. It is one of language elements which has important role to support
the learners’ ability in understanding the language. Without understanding the words and word meanings, the people will not be able to master the language
well, especially in communication Dale and O’Rourke, 1971. As stated by Pawly and Syder 1983, if people want to use the language fluently, they need to
be able to put words together quickly in typical combinations. Therefore, the learners have to be able to master many vocabulary items in English that is
learned as a foreign language and use the words in speaking and writing fluently and accurately. In senior high school level, the learners need to be taught high
frequency and academic words that are used in daily life context in academic study. They can learn the vocabulary through context-based approach.
In learning vocabulary, the learners’ mastery of vocabulary need to be assessed in order to know the students’ mastery of vocabulary in which the
vocabulary can support the students’ ability in communication Dale and O’Rourke, 1971. Mastery in this research means knowing the word meanings, i.e.
the Indonesian equivalences. The aim of the assessment is to find out whether the learners can do the test and answer the questions correctly or not. In measuring
vocabulary mastery of the students in senior high school level, the teachers can apply two types of test. They are multiple choice and matching. The tests can
measure the learners’ mastery through the score given after the tests are done. Multiple choice and matching are the easy types to be scored. The students will be
tested by using matching test to assess the students’ mastery of academic words in this research. The score is found through the correct answers and those are the
vocabulary that the learners master. In teaching vocabulary, the teachers need many strategies and facilities to
make the teaching learning process work well. The teachers can use context-based approach to teach vocabulary using dictionary as the escort of the learning
process. In learning vocabulary, the teachers can provide the kinds of dictionary, like book dictionary and E-dictioanary. Those two kinds of dictionary can help the
learners become easier in learning vocabulary. The teachers can also combine those two strategies to achieve the goals of vocabulary learning. Context-based
approach helped by the exsistance of dictionary will produce better result of vocabulary mastery. The teacher can apply one of the principles in teaching
vocabulary that is focus on the most vocabulary first. Therefore, the teachers PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI
