Parity magic - error detection and correction
Dublin Core
Title
Parity magic - error detection and correction
Subject
Error detection; parity bits; data integrity; binary data; computational thinking; unplugged computing
Description
A 30-minute CS Unplugged lesson using a card-based magic trick to introduce parity and error detection. Learners reason about rows, columns, odd/even patterns and extra parity bits to identify a changed card and connect the activity to reliable digital data.
Creator
Computer Science Education Research Group, University of Canterbury, New Zealand
Source
https://www.csunplugged.org/en/topics/error-detection-and-correction/parity-magic/
Publisher
CS Unplugged / University of Canterbury
Date
n.d.; accessed September 2026
Contributor
CS Unplugged contributors
Rights
Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) for website content
Relation
CS Unplugged error detection and correction topic
Format
Web lesson with printable parity cards and classroom guidance
Language
English
Type
Unplugged lesson
Coverage
Ages 8-10 in the published lesson; adaptable for introductory secondary computing
Website Item Type Metadata
Collection
Citation
Computer Science Education Research Group, University of Canterbury, New Zealand, “Parity magic - error detection and correction,” TinkerOER, accessed September 28, 2026, https://tinkeroer.ucd.ie/items/show/77.