To use this project please install OpenSCAD on your computer (Probably can't do that on a school Chromebook??)
Open up the project and select the rocket sprite
Click on the generate OpenSCAD file script
Once it's finished processing, right click on the code variable watcher and select export
It should download it as code.txt (or code .txt (xxxx) )
Launch OpenSCAD and do file open code.txt
You should see a preview of the rocket
I recommend enabling JavaScript and changing browser preferences to allow selecting the name of any file you try to save - it makes things a lot easier and smoother
If you enable JavaScript, it will auto download a file to your computer (using name of the sprite + .scad) - if not, just right click on the code watcher (Not the list one) and export it instead