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Learners create an Incan counting device called a quipu (pronounced kee-poo).

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

Learners explore the Bernoulli effect by building an airfoil (airplane wing) and making it fly.

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