My kids do some sort of arthropod dissection. A set of dissection of preserved animals usually have both a grasshopper and crayfish. Start with this worksheet, which compare several arthropods. You may want to compare species with a chart (answer key) Here is an excellent dissection guide from Carolina Biological. This guide has tons of details so you can get your money’s worth from the preserved animal. Sketch, sketch, sketch—especially the legs.
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