The purpose of this Selfie Science is to practice your building and measuring skills. 1. Build a structure that is between 30 cm and 100 cm tall. 2. Take a of your structure with a ruler, tape measure, or meter stick next to the structure. 3. Click to open the template. 4. your . 5. Label the height on your photo. Include the units. 6. Use the to record a summary of your structure.