This study aims to describe the activities of students in using student worksheets based on Contextual Teaching and Learning (CTL). The method used is descriptive quantitative. Student worksheets based on Contextual Teaching and Learning that are used in learning consist of three sub-layers are atmosphere, lithosphere, and hydrosphere. In CTL-based student worksheets there are 7 main components of CTL are constructivist, questioning, modeling, finding, community learning, reflection, and authentic assessment. Learning outcomes using CTL-based Student Worksheets are easier for students to understand learning material, this is shown by students in solving problems on student worksheets properly. Based on the results of the study it can be concluded that learning by using Student Worksheets based on Contextual Teaching and Learning helps students more easily understand the subject matter.