Use your phone or laptop (ask your parent for help with your specific phone).
For laptop:
At the bottom of your screen in the search bar type: camera.
Click on the app and it will activate your camera.
Hold up your work, it is okay that it looks backwards now.
Make sure to save the picture.
Resize and even Crop it so that just the work is showing.
Consider putting the paper on a clipboard so it is firm and has a dark background or use your comp book.
Only take a picture of one piece of paper at at time.
Test the quality of your picture by zooming in on specific words and numbers, can you read it?