Show what you know in math. Before beginning the Seesaw portion of this activity: Use the camera app to go around your classroom or your school and take pictures of 3 different objects you want to measure. Put your centimeter ruler in the picture with them to document the actual lengths of the objects. In the photos app on your iPad, click and choose "Markup" to label each object's length by adding text to your picture. When all of your photos have been marked up, you may begin with the Seesaw instructions below. 1. Click 2. Choose your name. 3. Click 4. At the bottom of your screen, click "+ Add More" 5. Choose the pictures you took. 6. Click to submit your work to your teacher.