Practicum and laboratory activities cannot be taken from biology learning. Activities require Laboratory Activity Designs and Student Worksheets as instructions for their implementation. Based on the results of a field study) that student worksheet measured in the field has several problems. Therefore, to overcome this, an in-depth analysis and reconstruction of student worksheet is needed. This study aims to describe the results of the analysis, trials and reconstruction of student worksheet osmosis to meet the requirements of the 2013 curriculum. The research method used is descriptive qualitative with a sample of 8 student worksheet from the 2004 curriculum, school based curriculum and 2013 curriculum. The selected student worksheet uses purposive sampling technique. The research instrument used was in the form of practical analysis, knowledge construction, and the relevance of the curriculum and content. Based on the results of the relevance analysis, most of the student worksheet are relevant to the curriculum. From the aspect of knowledge construction, student worksheet cannot yet describe the development of student skills. The results of the reconstruction that have been made have been assessed by experts. The research method used is descriptive qualitative with a sample of 8 student worksheet from the 2004 curriculum, school based curriculum and 2013 curriculum. Based on the results of the relevance analysis, most of the student worksheet are relevant to the curriculum. From the aspect of knowledge construction, student worksheet cannot yet describe the development of student skills. The results of the reconstruction that have been made have been assessed by experts..