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Information Hiding: Sharing Secrets
Computer Science UnpluggedAdd to list DetailsThis activity about cryptographic techniques illustrates a situation where information is shared, and yet none of it is revealed. A group of learners will calculate their average age without anyone...
Battleships: Searching Algorithms
Computer Science UnpluggedAdd to list DetailsThis activity explores the main algorithms that are used as the basis for searching on computers, using different variations on the game of battleships. This activity demonstrates three search...
Artificial Intelligence: The Intelligent Piece of Paper
Computer Science UnpluggedAdd to list DetailsThis activity explores what it means for a computer to be intelligent and introduces the topic of what a computer program is and how everything computers do simply involves following instructions...
Colour by Numbers: Image Representation
Computer Science UnpluggedAdd to list DetailsThis activity shows learners how computers use numbers to represent pictures. A grid is used to represent the pixels (short for picture elements) of a computer screen. Numbers indicate whether...
Card Flip Magic: Error Detection & Correction
Computer Science UnpluggedAdd to list DetailsThis magic trick is based on how computers detect and correct data errors. In the trick, a volunteer lays out a 5 x 5 square of identical cards colored on one side, with a random mix of sides...
You Can Say That Again!: Text Compression
Computer Science UnpluggedAdd to list DetailsThis activity helps students learn how computers "compress" text by identifying repeating patterns of letters, words, and phrases. Students use poems or nursery rhymes as their source...