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In this two part activity, learners become draft detectives by constructing their own draft catchers to detect drafts around windows or doors.

Learners make a counting/estimating jar to exchange with friends or bring home.

Scientists use enormous wind tunnels to test the design of planes, helicopters, even the Space Shuttle.

In this activity, learners make their own Sun tracker to explore how ancient civilizations around the world studied the Sun.

In this activity, learners make balloon models of disease-causing bacteria.

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

In this activity, learners will participate in a scavenger hunt involving sizes, shapes, and numbers. This activity works well with a whole group, individuals, or families.

Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.

In this activity, learners imagine what the world might look like if we could build an elevator to space!

In this activity, learners will use Google Sky to observe features of the night sky and share their observations.

In this activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force).