2 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
3 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.
4 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.
5 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.
6 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.
7 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.
8 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.