Use this link for directions on how to unzip or zip files on a chromebook
https://www.howtogeek.com/409680/how-to-zip-or-unzip-files-on-a-chromebook/
A few more notes:
The attached document's instructions assume you have downloaded the zip file. Here are instructions if you need them!
- Right mouse click on the zip file and select download
- Once it's done, select show in folder.
- If you can't find it, just select the Recent menu option on the left.
- Double click on the zip file and it will open the contents or hit OPEN and it will open the contents of the Zip file.
- Select all of the contents and then copy them and paste them into My Files >Downloads (or somewhere you can find them)
- VERY IMPORTANT STEP - upload those files into Google drive if you want to keep them, the local chromebook storage can be deleted.