Click on the green flag to start. Use the mouse to move the pencil, and hold down the left mouse button to draw. Click on a colour to change pencils. Click on the eraser to change to it, and use it to erase your work. To clear the page, click on the cross.
Credit codeclub.org and projects.raspberrypi.org This is the 5th project in their Module 1. For the project tutorial see: https://projects.raspberrypi.org/en/projects/paint-box For more project tutorials goto codeclub.org and click on 'Explore Projects'.