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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.

Data in computers is stored and transmitted as a series of zeros and ones. Learners explore how to represent numbers using just these two symbols, through a binary system of cards.

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.

When a lot of people share one network (such as cars using roads, or messages getting through the Internet), there is the possibility that competing processes will create a “deadlock," or an interrupt

In this activity (page 12), learners apply the concepts of pixilation and pointillism to the world of biomedical science.

In this activity about encryption, learners cut out a secret decoder badge from a handout and use it to encode messages to each other.

This activity (on page 2 of the PDF under SciGirls Activity: Earthquakes) is a full inquiry investigation into aerial imagery.