There are lots of situations where teachers may ask for hand-drawn, written work
This will mean taking a photograph of the work, and submitting
Follow the instructions below, to do this in the most efficient way...
Install the Google Drive app on your phone / tablet
Take photos of your work;
Correct way up
Flat
In good lighting
Go to 'Gallery' on your device
Select all the photos
Click share/ upload
Select Google Drive
Use your school account
Upload
Wait for the files to upload
Open the assignment where you want to submit the work
Open the Google Slides (or create one, if you teacher did not provide one)
Click insert > image > from drive
Select your images!