KEEP YOUR WORK ORGANIZED & BACK UP OFTEN
Organize your work in Google Drive by creating a new folder. You could name it, "Learning Portfolio" and add the year, for example, Learning Portfolio 2018-2019.
Every time you back up, save your work to this folder in Google Drive. For some apps such as Chatterpix, you'll need to first save your work to the Camera Roll and then save to Drive. For other apps like Educreations & Thinglink, you'll need to email links to yourself.
You should back up your work frequently, which means every week or every other week.