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**Kevin Scientist’s Notebook**


 * TITLE OF LESSON**

What do you have to investigate or figure out in this lesson that is related to the big idea? What will be the main question that will guide your learning? //What…, How…, Does… are good beginnings//
 * FOCUS QUESTION* (Big Idea)**

//1. What phylum do crayfish belong to? Anthropods 2. What three characteristics do crayfish share with all other arthropods? Jointed legs, segmented bodies, and an exoskeleton 3. What group of arthropods do crayfish belong to? crustaceans 4. What are two characteristics of crustaceans? Claws and mandibles 5. Name six other crustaceans. Lobster, Crab, Shrimp, Scampi, Spiny lobster And barnacles 6. How many antenna does a crayfish have and what are they used for? They have two and they are used to 7. How many legs does a crayfish have? Four pair of walkin legs 8. How many claws? two 9. What are the claws called? cheliopods 10. What are the claws used for? To grab and catch food 11. How many walking legs? 8 12. How many swimmeretes and what three things are they used for? 5 pairs used for reproduction, movement and to help force water over the gills 13. What two tail structures are used for swimming? Uropod and telson 14. How many mouthparts does the crayfish have? 6 15. What are the mouthparts used for? Processing and handling food 16. What organs in the crayfish are used for digestion? cardiac stomach, stomach, green gland, digestive gland, midgut, and intestine 17. What organs are used for circulating blood? Heart. Breathing? Dorsal and gills 18. What organs send nerve impulses through the body? brain and ventral nerve cord 19. What is the function of the ovaries? Produce eggs 20. What is the function of the anus? Remove waste 21. What is the function of the flexor muscles? Help crayfish swim backwards 22. Why is a crayfish classified as an invertebrate? 23. List all the animals we have dissected so far from simplest to most complex and list what phylum each animal is in.//