Thursday, December 3, 2009

Biology: 10,000 micrometers under the sea

This week the kids hunted for microorganisms in samples of pond water.

They turned up some interesting single-celled organisms, and even a worm or two. Believe me when I tell you, these 2 mm guys are pretty alarming swimming around eating algae magnified 100x!

The kids used what they learned last week to estimate the size of the different organisms. Surprisingly, we noted that the size of single-celled organisms are roughly the same size as the cheek and onion cells we looked at last week.

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