Table of Contents

• Prequiz
• 1: Tall (and small) tales
• 2: Metric conversions: step to the right, step to the left
• 3: 3 Worlds: Milli, Micro, Nano
• 4: Focus on the microworld
• 5: Practice measuring in the microworld
• 6: Next stop … the nanoworld
• 7: End of the line… the picoworld
• 8: Summary

Summary

I hope you’ve enjoyed the tours of nanoworld and microworld. In case you’d like a short list of things to remember, here are some suggestions.

In the microworld:

• 900 um -- fly's eye
• 100 um -- paper
• 7 um -- red blood cell (on the small side for a plant/animal cell)
• 1-10 um -- bacteria, mitochondria, and chloroplasts

And in the nanoworld:

• 100 nm -- viruses
• 10 nm -- cell membrane
• 2 nm -- DNA double helix
• 1 nm -- glucose molecule

Learning Outcomes

After completing this module you should be able to:

• Use appropriate units of length for different measurement contexts (milli-, micro- and nano- worlds)
• Convert units of length

If you want a printer-friendly version of this module, you can find it here in a Microsoft Word document. This printer-friendly version should be used only to review, as it does not contain any of the interactive material, and only a skeletal version of problems solved in the module.