Back in the day, the well-off families here in Murcia had loads of silkworms and mulberry trees, so that they were able to produce silk. Each year, instead of killing the worms in their cocoon phase (so as to produce perfect threads of silk) they left some of them to go through the whole metamorphosis process so as to be able to harvest the new eggs for the following year. So, all the 2nd grades were involved in a project to see the metamorphosis from an egg to a silkworm and then to a silk moth. Yours truly had the pleasure to observe this metamorphosis, and was at moments grossed out, and then again fascinated by the whole thing. I was learning just as much as the kids. I had no idea how silkworms look like, and I was totally surprised by the fact that once they turn into silk moths they cannot fly and die within days after depositing their eggs.
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