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Learners cut and fold a paper helicopter from the template in this PDF. They practice twirling the helicopter and observe what happens as they modify their tries.

Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space.

Many people get water from a source deep underground, called groundwater.

Learners discover that soap can be used to power a boat. Learners make a simple, flat boat model, put it in water, and then add a drop of detergent at the back of the boat.

Most of the time, we don't have to think about breathing. In fact, you're probably breathing right now without thinking about it!

Our bodies produce snot, or mucus, that we blow from our noses. In this activity, learners will create a model of how snot works and will explore how it keeps our bodies healthy.

In this activity, learners make a model of a one-way heart valve to investigate how a heart controls the direction of blood flow.

Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?