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In this activity, learners compare the ancient Egyptian system of measurement, which was based on body lengths, to the customary and metric systems used today.

In this activity, learners make an astrolabe, a device used for measuring altitude, including the height of objects in the sky.

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

In this experiment, learners design and build a model room in a shoebox and furnish it with tiny furniture.

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

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