Record your explanation of the Density & Pressure Review Assignment 1. Tap the add button. 2. Tap the file button to upload your completed assignment. 3. Choose the Select from Google Drive option and choose the correct assignment. 4. Tap the microphone button to explain WHY you placed the labels in the order that you did. 5. Tap the check to make sure you are happy with your recording. 6. Tap the check again to add your work to your journal.