1. Amphibians and Reptiles Chapter 18 Section 2 6 th Grade Chapter 18 Section 2 6 th Grade

2. Do Now…  If fish were to live on land, what adaptations would they need to survive?

3. Do Now…  Complete another mealworm observation. Work on lab questions and draw a picture if possible.

4. Objectives Students will…  Describe how amphibians have adapted to live in water and on land  Identify the adaptations that allow reptiles to live on land Students will…  Describe how amphibians have adapted to live in water and on land  Identify the adaptations that allow reptiles to live on land

5. Amphibians  Definition: animals that spend part of their lives in water and part on land  Origin of the word “amphibian”- from the Greek word amphibious which means “double life”  Examples: Frogs, Toads, Salamanders  Definition: animals that spend part of their lives in water and part on land  Origin of the word “amphibian”- from the Greek word amphibious which means “double life”  Examples: Frogs, Toads, Salamanders

6. Amphibian Adaptations (ectotherms) Hibernation  Cold climates  Period of inactivity  Bury themselves in mud or leaves Hibernation  Cold climates  Period of inactivity  Bury themselves in mud or leaves Estivation  Hot, dry climates  Period of inactivity  Burrow underground

7. Amphibian Characteristics  Have endoskeletons  Young have gills, adults have lungs  Have 3 chambered hearts  Adults exchange oxygen and carbon dioxide through skin  Have ear drums  Have endoskeletons  Young have gills, adults have lungs  Have 3 chambered hearts  Adults exchange oxygen and carbon dioxide through skin  Have ear drums

8. Reptiles---Unique Characteristics pg. 538 Turtles Crocodiles and Alligators LizardsSnakes Reptiles

9. Reptile Adaptations pg. 539 CharacteristicPurpose Skin Neck Lungs Internal Fertilization Amniotic eggs

10. Videos  Reptiles and Amphibians part 1 Reptiles and Amphibians part 1  Reptiles and Amphibians part 2 Reptiles and Amphibians part 2  Reptiles and Amphibians part 3 Reptiles and Amphibians part 3  Reptiles and Amphibians part 4 Reptiles and Amphibians part 4  Reptiles and Amphibians part 1 Reptiles and Amphibians part 1  Reptiles and Amphibians part 2 Reptiles and Amphibians part 2  Reptiles and Amphibians part 3 Reptiles and Amphibians part 3  Reptiles and Amphibians part 4 Reptiles and Amphibians part 4

11. For Next Time…  Read pgs. 535-539

12. Frog Metamorphosis and Reptiles and Amphibian Review Chapter 18 Section 2 6 th Grade Chapter 18 Section 2 6 th Grade

13. Do Now…  What is the difference between hibernation and estivation?

14. Objectives  Students will  Create a foldable to learn model the metamorphosis of an amphibian  Students will  Create a foldable to learn model the metamorphosis of an amphibian

15. Amphibian Metamorphosis (Frogs)(Frogs)Amphibian Metamorphosis (Frogs)(Frogs)  Create a foldable according to teacher instructions  1) Eggs- are laid by adult amphibian in the water  2) Young Larva-are dependent on water. They have no legs and breathe through gills.  3)Older Larva- body structures are developed that are necessary for life on land including legs and lungs.  4) Adult- have lungs, legs, breathe through skin and can reproduce. They require water for external reproduction.  Create a foldable according to teacher instructions  1) Eggs- are laid by adult amphibian in the water  2) Young Larva-are dependent on water. They have no legs and breathe through gills.  3)Older Larva- body structures are developed that are necessary for life on land including legs and lungs.  4) Adult- have lungs, legs, breathe through skin and can reproduce. They require water for external reproduction.

16. Practice Worksheet  With your lab group—complete Reinforcement worksheet on Amphibians and Reptiles

17. For Next Time…  Read pgs. 541-544  Define contour feather and down feather on index cards.  Read pgs. 541-544  Define contour feather and down feather on index cards.