Congratulations on coding today's computer science project.

The fun isn't over though.

Computer scientists often continue to work on projects after the basic programming is in place to make them more original and interesting.

Now, you get the chance to do the same with Add-Ons.

This video will explain the Add-Ons you can choose to customize your project.

Just like in the main videos for this project, watch the video first to learn how to build the Add-On, then try programming it on your own.

To get started, simply click on one of the Add-On choices after you watch this video.

Add a character to your project that describes the painting and the fun things your project does in Art Expert.

In Boombox, program the Mona Lisa to play music and bump along.


in Wallpaper, create a unique pattern by stamping the Mona Lisa many times.

Take some time to explore the Add-Ons that interest you and when you're done, be sure to click the share button in Scratch to allow others to see your project.

Include a brief description of how your project works and thank those who helped you.

Choose an Add-On

Art Expert

Add another sprite that describes your art piece. This sprite might even act surprised by what’s happening to the Mona Lisa!


Turn the Mona Lisa into a Boombox using a music loop and the fisheye effect.


Program the Mona Lisa to follow the mouse pointer and stamp when clicked. This will create a unique pattern on the stage.


  1. Choose an Add-On, and click "watch" to learn how to build it.
  2. Once you finish one Add-On, try another one below the video!