Frog by M75tt443

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									Life Cycle of a Frog


         Write On
         Grade 3 - 4
Learner Expectation
   Content Standard: 4.0 Heredity and Reproduction
   The student will understand the basic principles of
    inheritance.
   Learning Expectations:
   4.1 Recognize that living things reproduce.
   4.2 Recognize that offspring tend to resemble their
    parents.
   4.3 Recognize that the appearance of plants and
    animals changes as they mature
In this activity you will:

   Learn about the life cycle of a frog.
   Learn about the changes that take place as
    tadpoles change into frogs.
Life Cycle of a Frog: First Week

   A female frog lays
    5,000 to 6,000 eggs in
    water.
   Each egg is only 1.5
    mm in diameter.
   When the eggs are 6
    days old you can see
    the tiny tadpoles inside
    of the eggs.
Life Cycle of a Frog: 6-9 Days Old
                     The tadpoles come out of
                      their eggs.
                     They are now 8 mm long.
                     They are adapted to living in
                      water.
                     They take in oxygen from the
                      water through their gills.
                     They have long tails to help
                      them move through the water
                      to hunt for food.
Life Cycle of a Frog: 60-84 Days Old
                     The tadpole now has back
                      legs. It uses it’s legs and tail
                      to move around in the water.
                     Its legs will help it move
                      around on land.
                     It begins looking more like a
                      frog.
                     The last thing to disappear is
                      the tadpole’s tail.
                     It gets smaller and smaller
                      until it is gone.
Life Cycle of a Frog: Adult Frog
                      An adult frog doesn’t
                       look anything like its old
                       tadpole self.
                      Adult frogs breathe air
                       through lungs-not gills.
                      They spend most of their
                       time on land-not in
                       water.
                      They can jump on land
                       and swim in water.
The Life Cycle of a Frog:
Writing Activity
   Create a Four Square writing paper.
   Write a topic sentence that is appropriate for the
    lesson about what you have learned about the Life
    Cycle of a Frog.
   Write one detail in each square.
   Self edit and then exchange with a friend for peer
    editing.
   Take it to paper.
   Draw a picture of an egg, a tadpole, and an adult
    frog.

								
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