Lili Astuti Isnaeni,dkk / Journal of Biology Education 6 (2) (2017) : 137-143 137 J.Biol.Educ. 6 (2) (2017) Journal of Biology Education http://journal.unnes.ac.id/sju/index.php/ujbe The Development of Guided Inquiry-Based Students’ Worksheet in Cell Material for Senior High School Students Lili Astuti Isnaeni 1 , Ari Yuniastuti 1 , R.Susanti 2 Biologi Department, Matematics and Natural Science Faculty, Semarang State University, Indonesia. Info Article ________________ Article of history Received : 2 July 2017 Accepted : 2 July 2017 Publication : 15 November 2017 ________________ Keywords: Cells, guided inquiry, worksheets ____________________ Abstract This research was aimed to develop guided inquiry-based students’ worksheet in cell materials for students in senior high school. It has the characteristics of valid, readable, and executable. This research was a Research and Development (R&D) type. The validity of worksheet was valued by validator and analyzed using percentage description. The readability of worksheets can be obtained by small scaled try out to 20 students taken by using purposive random sampling. The executability of worksheets was obtained by bigger scale try out to 32 students. The result of the research showed that the guided inquiry- based students’ worksheets had characteristics of: 1) cell titled worksheets with its observation; 2) the activities based on syntax model of guided inquiry learning; 3) the material is related to real example; 4) the illustration picture in worksheets was real and 5) the display of worksheet in full color. The average percentage of validity to the worksheet was 83.06%. The percentage score of the worksheet was 85.31% with executability of 93.18%. Based on the results, it can be concluded that this worksheet has several characteristics and valid category to be used. It also had good readability and executability to the students. © 2017 Universitas Negeri Semarang  Alamat korespondensi: Gedung D6 Lt.1 Jl Raya Sekaran Gunungpati Semarang E-mail:liliastutiisnaeni33@gmail.com p-ISSN 2252-6579 e-ISSN 2540-833X