Dissection #1: Echinoderms

This evening we got to do our first family dissection.  Starfish.

Before we began, Evelyn and Zeke were pretty apprehensive – but once the starfish was out of the vacuum sealed package, it wasn’t all so bad.  I may have even learned something today…

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Zeke says that the most unique thing that he learned today was about the water vascular system….hmmm.  I coaxed him into that one.  Evie thought the stomach was pretty interesting.  It acts like a parachute.

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Zeke is cutting into one of the starfish’s rays.

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Evie’s turn cutting into the starfish.

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Evie is literally holding the gonads of the starfish.  We had to look at these under the microscope to determine the sex.

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And this boy…having a little too much fun.

Below are some of the items we used for this experiment.  The starfish was out of a dissection specimen kit from Home Science Tools.

 

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