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Colour by Numbers: Image Representation

Computer Science Unplugged
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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...

1 cent - $1 per student Ages 6 - adult 30 to 45 minutes
The Poor Cartographer: Graph Coloring

Computer Science Unplugged
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In this activity, learners help a poor cartographer color in the countries on a map, making sure each country is colored a different color than any of its neighbors. Through this exercise, learners...

1 cent - $1 per group Ages 6 - 18 30 to 45 minutes

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