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Learners make a simple battery out of "sandwiches" of aluminum foil, pennies, and a salt water-soaked paper towel.

This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.

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.

Learners design different shaped bandages for different purposes. First, they draw their designs on paper.

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.

In this experiment, learners design and build a model room in a shoebox and furnish it with tiny furniture.