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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.

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

Learners describe objects in a room using only numbers and shapes. They can measure the object (like a desk) and make a list of facts about it (e.g.

In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

In this quick activity about size and scale (on page 2 of the PDF under What's Nano?

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