We are studying invertebrates in 5th grade right now. Each day we talk about a different phylum of invertebrates starting with the simplest of organisms, the sponges. The last few days we have been learning about the annelids or segmented worms. We spent a day getting up close and personal with leeches and worms. The students designed experiments to test worm and leech behavior. We had worms tied in knots and leeches swimming through mazes.
The next phylum we studied was Mollusca. We talked about snails, slugs, clams, octopi and squid. Today we spent some time dissecting squid. You can buy full squid - guts and all - at the grocery store. The students had a good time checking out their squid's mantle, tentacles and eyes. Then we ripped their poor little heads off to get a close look at the internal organs. The kids even got to write their names with the squid's "pen" using the squid's very own ink sac.
Tomorrow I will make calamari for the class. Yum!
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