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This lesson focuses on how to measure at the nanoscale and provides learners with an understanding how small a nanometer really is.

In this activity related to microbes, learners create scale models of microorganisms and compare relative sizes of common bacteria, viruses, fungi and protozoa using metric measures: meters, centimete

This fun hands-on astronomy activity lets learners explore models of the Milky Way and other galaxies to get a sense of relative distances to other galaxies.

In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.