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Amphibians and Reptiles. Chapter 18 Section 2 6 th Grade. Do Now…. If fish were to live on land, what adaptations would they need to survive?. Do Now…. Complete another mealworm observation. Work on lab questions and draw a picture if possible. . Objectives. Students will…
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Amphibians and Reptiles Chapter 18 Section 2 6th Grade
Do Now… • If fish were to live on land, what adaptations would they need to survive?
Do Now… • Complete another mealworm observation. Work on lab questions and draw a picture if possible.
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
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
Amphibian Adaptations (ectotherms) Hibernation • Cold climates • Period of inactivity • Bury themselves in mud or leaves Estivation • Hot, dry climates • Period of inactivity • Burrow underground
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
Videos • Reptiles and Amphibians part 1 • Reptiles and Amphibians part 2 • Reptiles and Amphibians part 3 • Reptiles and Amphibians part 4
For Next Time… • Read pgs. 535-539
Frog Metamorphosis and Reptiles and Amphibian Review Chapter 18 Section 2 6th Grade
Do Now… • What is the difference between hibernation and estivation?
Objectives • Students will • Create a foldable to learn model the metamorphosis of an amphibian
Amphibian Metamorphosis (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.
Practice Worksheet • With your lab group—complete Reinforcement worksheet on Amphibians and Reptiles
For Next Time… • Read pgs. 541-544 • Define contour feather and down feather on index cards.