8 has to learn more words. Second, knowing L2 learners vocabulary distribution
also helps to check the progress learner have made in their vocabulary use. ” p.94
Thus, vocabulary profile gives teachers view about stud ents’ vocabulary use; it
indicates which words the students have mastered and which words students need to practice more.
4. Vocabulary Classification
Nation ’s 1999 four classification of word frequency as mentioned in the
beginning of literature review will be used as the instrument of this study, they are “high frequency vocabulary K1 and K2, academic vocabulary AWL, technical
vocabulary and low frequency vocabulary ” p. 19. High frequency vocabulary is
vocabulary that is commonly used in the textbook. It includes language feature: article, pronoun, conjunction etc. In vocabulary profile, high frequency
vocabulary is known as K1 word range 1-1000 and K2 word range 1001-2000. It covers about 80 in a particular text. High frequency vocabulary should
include the most frequent 3,000 word families Schmitt and Schmitt, 2012. Second is academic vocabulary. Academic words occur frequently in academic
text and cover 10 of the running words in academic text Coxhead, 2000. On the other hand, technical vocabulary only appears sometimes frequently in
particular text and it covers 3 of the running words. different with the other type, low frequency vocabulary is words that uncommonly exist in a text and it
covers only 4. It also known Off-List Words.
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5. Previous Study of vocabulary profile in textbook
The previous study conducted by Argo Dea Galuh Kirana Ardyny in 2014. The study analyze the vocabulary profile of Introduction to Language Education
2013 course book. The textbook used by students of English Language Education Program in Faculty of Language and Literature, Satya Wacana
Christian University, Salatiga. The findings of the study showed the vocabulary used in K-1 was 76.51, K-2 was 4.30, K-3 or AWL was 10.47, and off-list
was 8.72. The results of the study showed that unit 1 of the course book could be relatively easy to comprehend because it had the highest proportion of 1000
word list K1 and the lowest proportion of Academic Word List AWL. On the other hand, unit 5 was considered hard to comprehend because of its lowest
proportion of K1 and its highest proportion of AWL. Unit 7 considered hard as it had the third highest of AWL. From this study could conclude that teachers
should be more aware with the words contained in the course book so that they can decide the choice of words in creating materials for the students.
The other previous study about vocabulary profile is a study from Della Nathania 2014 entitled ‘Vocabulary Profile of English Textbook Used in Senior
High School’. The findings of the study showed the total average of K1 words in grade 10 was 80.10, grade 11 was 82.30, and grade 12 was 79.20. K2 words
in grade 10 was 7.10, grade 11 was 6.10, and grade 12 was 7.40. AWL words in grade 10 was 2.50, grade 11 was 2.20, and 12 was 2.50. From this
study could be assumed that those textbooks were easy to comprehend. The researcher suggested that teachers did not need to provide students with extensive
10 list of vocabulary. In line with this study, the present research investigated a
textbook for grade 11 in vocational high school in Salatiga.
THE STUDY 1.
Method of Research
This study used descriptive method. According to Rivera, M. and Rivera, R. 2007 discover facts on which professional judgment could be based.
Moreover, it involves description, analysis, and interpretation .
By using a descriptive method, English textbook for Vocational High School was analyzed in
order to figure out the texbook whether it is suitable or not. Therefore, the description will analyze the vocabulary included in the category of K1 words, K2
words, academic words, and off-list.
2. Material
