Computer games, apps, and other devices store pictures by reducing them to numbers. Without reducing images into a grid, the file would be too large to store in memory. Create a paint-by-number image to explore how computers convert pictures into number grids.

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Download and print copies of the ‘Kid Fax’ and ‘Bonus: Make Your Own’ sheets (pages 4 and 5) here: http://csunplugged.org/sites/default/files/activity_pdfs_full/unplugged-02-image_representation.pdf