Consumable. One set of these consumable sheets is included in the Science G Instructor's Guide. You need one set per student. If you might reuse your Instructor's Guide and Student Activity Sheets in the future (for a younger child, for instance), we strongly suggest that you purchase an extra set of Activity Sheets wh Sonlight resource: https://www.sonlight.com/products/extra-science-g-student-activity-sheets-2024