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This 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 pixels should be black or white. Learners decode a few pictures and create their own and as an extension can create a color picture beyond just black and white. The activity references fax machines, but the same principles are used by all computer-driven displays.
- Under 5 minutes
- 30 to 45 minutes
- 1 cent - $1 per student
- Ages 6 - adult
- Activity, Lesson/Lesson Plan
- English, French, Italian
Quick Guide
Materials List (per student)
- OHP (Overhead Projector) transparency made from OHP Master: Colour by numbers (page 16)
- Worksheet Activity: Kid Fax (page 17)
- Worksheet Activity: Make your own picture (page 18)
Subjects
-
Engineering and Technology
-
Computing
- Computer Science
-
Engineering
- Computer Engineering
-
Computing
-
Mathematics
-
Data Analysis and Probability
- Data Representation
-
Data Analysis and Probability
Informal Categories
- Arts and Crafts
- Computers
Audience
To use this activity, learners need to:
- see
- see color
- read
- touch
Learning styles supported:
- Involves hands-on or lab activities
Other
Foreign language versions of this resource:
- Italian: Colorare coi numeri —La rappresentazione delle immagini
- French: La couleur par les nombres – Représentation d’une image
- Polish: Kolory jako liczby — Kodowanie obrazów
- Turkish: Rakamlarla Renk—Resim Temsil Etmek
- Greek: Ζωγραφίζοντας με τους αριθμούς - Η αναπαράσταση των εικόνων Περίληψη
- Russian: Цвет Чисел— Представление изображения
- Portuguese: Colorindo com Números—Representação de Imagens
- Hungarian: Szín számokkal — Képábrázolás
Components that are part of this resource:
Includes alignment to state and/or national standards:
This resource is part of:
Access Rights:
- Free access
By:
- Bell, Tim ; Witten, Ian ; Fellows, Mike ; Adams, Robyn ; McKenzie, Jane
Rights:
- Creative Commons: Non-commercial No Derivatives (by-nc-nd), Computer Science Unplugged, 2005
Funding Sources:
- Brian Mason Scientific and Technical Trust
- Google Inc.