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In this activity, learners mark their height on a height chart and discover how tall they are in nanometers.

This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.

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

In this activity, learners play a card game that explores different size scales--macro, micro and nano.

This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).

Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.