International Journal of Advanced Science and Technology Vol. 29, No. 06, (2020), pp. 1932-1940 1932 ISSN: 2005-4238 IJAST Copyright ⓒ 2020 SERSC Developing the Instrument of Pre-Writing Skill to the First Grade Students of Elementary School Fahrurrozi 1 , Sehati Kaban 2 , Ratna Sari Dewi 3 , Reza Rachmadtullah 4 , Prayuningtyas Angger Wardhani 5 , Uswatun Hasanah 6 1)2)5)6) Department of Elementary School Teacher Education at Universitas Negeri Jakarta, Indonesia. Email : fahrurrozi@unj.ac.id 3) Department of School Teacher Education at Universitas Islam Negeri Syarif Hidayatullah, Indonesia. 4) Department of Elementary School Teacher Education at Universitas PGRI Adi Buana, Indonesia. Email : reza@unipasby.ac.id Abstract This research aimed to develop the instrument of pre-writing skill to the first grade of Elementary School. In specific, this research propose to resolve teachers’ problem such as (1) most of students’ writing assignment is not well-structured and only given the example of writing on the white board., (2) writing assessment from the teachers still have not met the criteria of assessment standard, (3) teachers’ ability in developing the instrument that measure students’ pre-writing skill is still low. Research and Development (RnD) is used as the method of the research by using the procedural instrument development research design. 150 students from the first grade of elementary school in South Jakarta is chosen as the respondent of the research. The sampling technique that is used in this research is purposive sampling. Based on the assessment of the expert validator, the result of the research prove that pre-writing instrument results good validity and reliability. Besides, pre-writing instrument that consists of 12 items shows 9 valid items and 3 invalid items. Based on the result of questionnaire that is addressed to the teachers, it describes the structure and the difficulty level of writing assignments from low difficulties to high difficulties by using assessment rubric. Thus, the result of the research can be one of the consideration to elementary school teachers especially for the first grade to identify students’ pre-writing skill. Keywords: Instrument, pre-writing skill, first grade students, elementary school INTRODUCTION Pre-writing is basic writing process that taught first by the teachers to the students. Pre- writing process is usually coupled with pre-reading process that called as pre-reading and writing activity [1]. Pre-writing process generally intend to teach young students to write correctly [2]. Nonetheless, pre-writing activity usually done after or parallel with pre-reading activity in first grade of elementary school. The underlying reason is when the students able to read, they will easier to write [3], [4]. Writing skill is the ability to express the idea, argument or feeling through written language. Students’ accuracy in expressing idea have to be supported by the accuracy of language use, vocabulary, grammatical, and punctuation. Teaching activity in the first grade students of elementary school, the basic learning is reading and writing skill. Those things are the basic knowledge for further level. In pre-writing process, teachers’ skill is more focus with full attention to the students. Besides, teachers also need authentic measurement in assessing pre-writing assignment to the first grade students [2].