1. Tap and find your name. 2. Build two block towers from snap cubes. Your towers should be no more than 10 cubes tall. 3. Using the tool, take a picture of your two towers. 4. Using the tool, label the shorter tower as "Shorter" and the taller tower as "Taller". 5. Tap to save and again to submit. 6. When you finish, compare your towers to others working in your group. What do you notice? What do you wonder?