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Frog

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Frog

  1. 1. Life Cycle of a Frog Write On Grade 3 - 4
  2. 2. Learner Expectation <ul><li>Content Standard: 4.0 Heredity and Reproduction </li></ul><ul><li>The student will understand the basic principles of inheritance. </li></ul><ul><li>Learning Expectations: </li></ul><ul><li>4.1 Recognize that living things reproduce. </li></ul><ul><li>4.2 Recognize that offspring tend to resemble their parents. </li></ul><ul><li>4.3 Recognize that the appearance of plants and animals changes as they mature </li></ul>
  3. 3. In this activity you will: <ul><li>Learn about the life cycle of a frog. </li></ul><ul><li>Learn about the changes that take place as tadpoles change into frogs. </li></ul>
  4. 4. Life Cycle of a Frog: First Week <ul><li>A female frog lays 5,000 to 6,000 eggs in water. </li></ul><ul><li>Each egg is only 1.5 mm in diameter. </li></ul><ul><li>When the eggs are 6 days old you can see the tiny tadpoles inside of the eggs. </li></ul>
  5. 5. Life Cycle of a Frog: 6-9 Days Old <ul><li>The tadpoles come out of their eggs. </li></ul><ul><li>They are now 8 mm long. </li></ul><ul><li>They are adapted to living in water. </li></ul><ul><li>They take in oxygen from the water through their gills. </li></ul><ul><li>They have long tails to help them move through the water to hunt for food. </li></ul>
  6. 6. Life Cycle of a Frog: 60-84 Days Old <ul><li>The tadpole now has back legs. It uses it’s legs and tail to move around in the water. </li></ul><ul><li>Its legs will help it move around on land. </li></ul><ul><li>It begins looking more like a frog. </li></ul><ul><li>The last thing to disappear is the tadpole’s tail. </li></ul><ul><li>It gets smaller and smaller until it is gone. </li></ul>
  7. 7. Life Cycle of a Frog: Adult Frog <ul><li>An adult frog doesn’t look anything like its old tadpole self. </li></ul><ul><li>Adult frogs breathe air through lungs-not gills. </li></ul><ul><li>They spend most of their time on land-not in water. </li></ul><ul><li>They can jump on land and swim in water. </li></ul>
  8. 8. The Life Cycle of a Frog: Writing Activity <ul><li>Create a Four Square writing paper. </li></ul><ul><li>Write a topic sentence that is appropriate for the lesson about what you have learned about the Life Cycle of a Frog. </li></ul><ul><li>Write one detail in each square. </li></ul><ul><li>Self edit and then exchange with a friend for peer editing. </li></ul><ul><li>Take it to paper. </li></ul><ul><li>Draw a picture of an egg, a tadpole, and an adult frog. </li></ul>

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