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In this activity, learners will measure the length of their shadow from the Sun and compare it three to four months later.

This is an activity about turbidity, or the amount of sediment suspended in water.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this activity, learners explore how and why rainbows form by creating rainbows in a variety of ways using simple materials. Learners create rainbows indoors and outdoors.

In this weather forecasting activity, learners use common materials to construct a rain gauge and measure daily, monthly, and yearly rainfall.

"What's in the Water" lets participants use tools to solve the mystery- what chemicals and compounds are in a sample of water?

In this activity, learners explore how light and dark colored objects absorb the Sun's radiations at different rates.

In this three part activity, learners explore and experiment with shadows to learn about the Sun's relative motion in the sky.

In this activity, learners observe the effect of transpiration as water is moved from the ground to the atmosphere.

In this meteorology activity, learners construct simple devices to measure the direction and speed of wind.

In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.

In this activity, learners estimate how much water they think can be found in various locations on the Earth in all its states (solid, liquid, and gas) to discover the different water ratios in the Ea