1. Tap the button 2. Use the labels to add them to the correct place. 3. You can use the function to explain the labels as you move them into place. 4. You could also identify which Atrium and Ventricle have deoxygenated blood and which have oxygenated blood. 3. Give yourself a 'Green Pen Comment' by using the or tool 5. Click the to submit your work.