Cells Alive!


The Cells Alive!  website is a great resource for biology teachers and home educators covering cell biology.

One of the most unique features of this site — which can be used for elementary through college students — is the How Big? interactive Zoom in to see the relative sizes of a pin head, a human hair, a dust mite, and various bacteria and viruses.  This really gives people of all ages a solid understanding of just how small these microscopic objects are!  Measurements are provided in millimeters, then micrometers and finally nanometers.

This site also features a Cell Gallery, interactive Cell Models with links to more information about each structure, and various online puzzles and quizzes.

There are 4 sections on the Cells Alive! website, each with links to their various interactive features:

While much of the details on this site can really only be useful to high school or college level students, a few animations and interactives are helpful for even young children – like the How Big? interactive mentioned above.


If you use the Cells Alive! website — or would like to recommend a similar resource — please leave a little feedback below – thanks!


Astronomy gear that will help you see what's in the sky tonight!




About Fran Lafferty

I've been making little worksheets and games since I was about 5 years old and have published thousands of pages of printables since 2004. I'm still creating away... visit my Gravatar page to see my other online projects and to find my contact information.
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