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In this design challenge, learners use their creativity and imagination to design and test a wildlife crossing for their favorite animal.

In this online activity, learners adjust mountain snowfall and temperature to see how glaciers grow and shrink. They will use scientific tools to measure thickness, velocity and glacial budget.

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

In this activity, learners sort different natural phenomena into categories (they occur on Earth, on the Moon, or on both), and then model how energy moves during a quake using spring toys.