Developing of student worksheets with scientific approach on growth and development topic at SMAN 1 berastagi grade XII academic year2019/2020

This research aims to design and produce Student Worksheets based on scientific approach on Growth and Development topic. The research design used is Research and Development method with 3D model which is define, design and developing stage. The subjects of this research were Material Expert, Learning Expert, Biology Teacher, and Students of grade XII SMAN 1 Berastagi that consist of 6 classes with 216 students as population sample number. Data collection was carried out with instrument in the form of questionnaire, while the data analysis using qualitative and quantitative descriptive analysis. The result showed this product classified into very feasible category with an average score 95,93% by material and learning experts assesment, meanwhile the assessment of biology teacher obtained 95% with very good category as well. The student responses of the small group, limited group, and large group trials obtained very good category with the whole average score 91,66 %. This student worksheets obtains "Very Feasible" criteria and has fulfilled the requirements of eligibility for use as a medium of biology learning process.