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Computers are often used to put lists into some sort of order—for example, names into alphabetical order, appointments or e-mail by date, or items in numerical order.

In this activity (on page 1 of the PDF under SciGirls Activity: Earthquakes), learners will use a magnifier to carefully examine samples of sand from different locations.

In this outdoor mapping activity, learners explore where plants grow and map plant-distribution patterns.

Even fast computers are limited to how quickly they can solve problems. One way to speed things up is to use several computers at once.