Saturday, December 20, 2014

Fourth Graders Build "Pond" Ecosystems...

Guppies acclimating to temperature and chemistry of  a mini pond.

Students take notes on how many of each organism they put in the "pond.", so that they can assess the health of the ecosystem when they return form winter break.

Daphnia image from Wikipedia.

Many students named their critters, including the tiny daphnia. One poor critter was mistakenly put in guppy cup and was eaten immediately.    Food chain in action.

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