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In this activity, learners will make seed orbs to grow new trees and plants. Learners will explore ecology and life cycles as well as stewardship through this activity.

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

In this activity, learners will build a bee hotel for pollinators. Learners will explore building and ecology through this activity.

In this activity, learners explore nonrenewable resources and learn why these resources are finite.

How do scientists measure how clear or murky water in a lake is? How does water clarity (clearness) affect what lives in the lake?

In this quick and easy activity, learners build an air cannon "drum" and see what happens when they "shoot" puffs of air at different targets.

In this activity, learners construct a small "air cannon," and use its airflow to put out a candle (lit with the help of an adult).