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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.

1 cent - $1 per student Ages 6 - adult 30 to 45 minutes
Source Institutions
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In this activity, learners will explore how maps can provide information about a place and help us find our way from one location to another.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes