4th Grade Ch. 1 Lesson 4 How Are Animals Classified

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4th Grade Ch. 1 Lesson 4 How Are Animals Classified

  1. 1. Ch. 1 Lesson 4 How are animals classified?
  2. 2. vertebrate <ul><li>animal with a backbone </li></ul>
  3. 3. 5 classes of vertebrates mammals reptiles birds amphibians fish
  4. 4. Vertebrate Characteristics Fish Scales, live in water, cold-blooded, lay eggs, gills Amphibians Smooth skin, live in water and land, cold-blooded, lay eggs Reptiles Scales, lay eggs, cold-blooded, lungs Mammals Hair or fur, warm-blooded, live births, lungs Birds Feathers, warm-blooded, lay eggs, lungs
  5. 5. invertebrates mollusks worms arthropods no backbone cnidarians
  6. 6. arthropod <ul><li>largest group of invertebrates </li></ul><ul><li>jointed legs </li></ul><ul><li>divided into sections </li></ul><ul><li>covered by hard exoskeleton </li></ul>
  7. 7. The Life Cycle of the Brown Garden Snail <ul><li>lays its eggs </li></ul><ul><li>eggs hatch in 2-4 weeks </li></ul><ul><li>newly hatched snails must find food </li></ul><ul><li>adults reproduce </li></ul>
  8. 8. Review Time !
  9. 9. vertebrate <ul><li>animal with a backbone </li></ul>
  10. 10. 5 classes of vertebrates mammals reptiles birds amphibians fish
  11. 11. invertebrate <ul><li>animal without a backbone </li></ul>
  12. 12. arthropod <ul><li>largest group of invertebrates </li></ul><ul><li>jointed legs </li></ul><ul><li>divided into sections </li></ul><ul><li>covered by hard exoskeleton </li></ul>
  13. 13. invertebrates <ul><li>Which are there more of: vertebrates or invertebrates? </li></ul>
  14. 15. <ul><li>Use a large space in a cafeteria, gymnasium, or playground to model the length of a giant squid by marking off a distance of 15 m. Use two basketballs to demonstrate the size of the squid's eyes. Then, mark off a distance of 6 m so students can compare the length of a Burmese python with the length of the giant squid. Have students use a measuring tape to find the lengths in feet and inches. </li></ul>Activity-Compare Animal Sizes

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