Pixel Pandemonium - an “unplugged” activity for illustrating Computer Science Principles
Jeffrey L. Popyack/Drexel University, William M. Mongan/Ursinus College

Welcome to Pixel Pandemonium!


Pixel Pandemonium is an all-online version of Post-It Pandemonium, a hands-on CS activity in which students learn how images are represented on a computer and construct a large version of an image one pixel tile at a time.

Teachers create an activity instance, share the student URL or QR code, and watch the full image appear in the replay view.

Use the teacher dashboard to create a class instance. Students should use the URL or QR code generated for that instance.

Join the public Tetris demo as a student

Open the public Tetris demo teacher dashboard page

Create a shared pixel-art activity, invite students to complete tiles, and watch the finished image emerge.

Teachers should begin at the Teacher Dashboard.

Directions: