Dina.Andriantini 2010 Teacher’s strategies in teaching vocabulary at SD Negeri Mendungan 2 Yogyakarta. English Education Department. Universitas Muhammadiyah Yogyakarta. In process of learning English vocabulary, the teacher needs to use many strategies to help students understand vocabulary. Therefore, this research aims at investigating the teacher’s strategies on teaching vocabulary. In addition, the goal of this research is also to know how the teacher implements her vocabulary teaching strategies in the classroom. To obtain the data, the researcher employed qualitative approach with interview and observation as the data collecting instruments. The respondent of this research was the English teacher at SD Negeri Mendungan 2 Yogyakarta. After the data have been obtained, the researcher analyzed the result by transcribing and categorizing the data. The result of this research showed that the teacher has six strategies that she implements in teaching vocabulary. The strategies are teacher spent time for teaching vocabulary, teacher used sources for encountering new words, teacher repeated or drilled vocabulary, teacher explained vocabulary orally and written, teacher clarified vocabulary and teacher used LKS (Students’ worksheet). The implementation of the six strategies are teacher taught vocabulary from the vi beginning to end of the class, the teacher the students to used bilingual dictionary to find out the meaning of words and also sometimes use songs and flashcard in teaching vocabulary, teacher repeated the vocabulary and asked to students repeat after her, the teacher presented the vocabulary orally and wrote down the words on whiteboard when the students asked the words they did not know, teacher asked the students to guess the meaning of vocabulary first and then clarified to other students, the teacher asked the students to used LKS in doing assignments to improve their vocabulary.