Computer Science Unplugged
Drawing Lines with Pixels
How do the computers keep it straight? Using the provided algorithms, class members draw a line and a circle using pixels. They then check the drawings using a straight edge and compass to determine the accuracy of their drawings.
Computer Science Unplugged
Sharing Secrets—Information Hiding Protocols
Did you know that you can find the average age of a group of people without anyone having to real their age? This resource provides directions for way to do just that. After the activity, class members read a short passage that provides...
Computer Science Unplugged
You Can Say That Again! – Text Compression
Compression, the process computers use to store information, is the focus of a resource that presents two different stories that describe the concept of compression by eliminating repeated letters and replacing them with a pointer. The...
Computer Science Unplugged
Phylogenetics
Introduce your class to the concept of creating phylogenetic trees by playing a game of Telephone. Participants create a mixed-up message and through the use of distance matrices, the evolution of the message is recreated.