3rd Grade Ch. 2 Lesson 2 How do Animals Grow & Change
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3rd Grade Ch. 2 Lesson 2 How do Animals Grow & Change

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3rd Grade Ch. 2 Lesson 2 How do Animals Grow & Change Presentation Transcript

  • 1. Ch. 2 Lesson 2 How do animals grow & change?
  • 2. Life Cycle Stages of Animals Birth born or hatch Growth get bigger Development change into adults Reproduction produce young Death lives come to an end
  • 3. Life cycle of insects (monarch butterfly)
      • E gg  L arva  P upa  A dult
  • 4.
    • covered in hard coating (chrysalis)
    • caterpillar
    Butterfly life cycle activities
  • 5. egg larva pupa adult Butterfly Life Cycle
  • 6. Frog Life Cycle 4. adult 3. growing tadpole 2. tadpole (larva) 1. egg
  • 7. mammal life cycle Have less changes in their life cycle than insects or amphibians Develop inside mom’s body Babies drink mom’s milk
  • 8. Draw, color and label a picture of each of the following life cycles:
    • Insect (butterfly) life cycle
    • Frog life cycle
    • Mammal life cycle
  • 9. Review Time
  • 10. Life Cycle Stages of Animals Birth born or hatch Growth get bigger Development change into adults Reproduction produce young Death lives come to an end
  • 11. What is the purpose of the pupa?
    • To protect the butterfly as it changes into an adult.
  • 12. List the sequence of steps in a butterfly’s life cycle. Use the signal words first , next , then , and finally .
    • First , an egg is laid.
    • Next , a larva, or caterpillar, hatches.
    • Then , the larva spins a covering around itself and becomes a pupa.
    • Next , a butterfly crawls out.
    • Finally , adult butterflies mate and lay eggs.
  • 13. Before a frog can live on land, how must its body change?
    • A frog must grow lungs so that it can breathe air and powerful legs to propel itself forward.
  • 14. How is a mammal’s life cycle different from a frog’s or butterfly’s life cycle?
    • A mammal develops inside its mother, is born looking like its parents, and does not change a lot in its life cycle.
    • A frog or butterfly develops in an egg that the mother lays, hatches, and changes a lot in its life cycle.
  • 15. Think about how mammals care for their young. Describe why this kind of care might be helpful for most mammals.
    • Young mammals are fed and protected until they learn how to live on their own and grow large enough to protect themselves.
  • 16. Name and circle the correct phase in the butterfly’s life cycle. It is also known as a caterpillar. It’s body changes a lot, growing wings and jointed legs. It’s life cycle begins. The adult butterfly comes after this stage. It is able to lay eggs. It is covered in a hard coating (chrysalis).