Mammals Chapter 18 Section 4 6 th Grade Chapter 18 Section 4 6 th Grade

Review Now…  Check and review worksheet on Birds.  Finish Metamorphosis Lab questions  Check and review worksheet on Birds.  Finish Metamorphosis Lab questions

Objectives Students will  Identify the characteristics common to all mammals  Explain how mammals are adapted to different environments on earth  Distinguish among monotremes, marsupials and placentals Students will  Identify the characteristics common to all mammals  Explain how mammals are adapted to different environments on earth  Distinguish among monotremes, marsupials and placentals

Characteristics of Mammals  1) Endothermic (warm blooded)  2) Mammary glands to produce milk  3) Hair  4) Specialized teeth  5) Well-developed Lungs  6) Complex nervous system  7) Internal fertilization  1) Endothermic (warm blooded)  2) Mammary glands to produce milk  3) Hair  4) Specialized teeth  5) Well-developed Lungs  6) Complex nervous system  7) Internal fertilization

Different Types of Teeth (pg. 546) Types of Teeth What they eat Examples Carnivore Omnivore Herbivore

Mammal Types Monotremes Examples:  Duck-billed platypus  Spiny anteater Monotremes Examples:  Duck-billed platypus  Spiny anteaterCharacteristics  Smallest group of mammals  Found only in Australia and New Guinea  Lay eggs with tough leathery shells  Mammary glands

Mammal Types Marsupial Examples:  Kangaroos  Koalas  Tasmanian Devils  Wallabies  Opossum Marsupial Examples:  Kangaroos  Koalas  Tasmanian Devils  Wallabies  Opossum Characteristics  Most carry young in pouch  Embryos develop only for a few weeks inside  Young born without hair, blind and not fully formed  Crawl into pouch after birth where they complete development

Mammal Types Placental Examples:  Humans  Mice  Rats  Horses  Elephants Placental Examples:  Humans  Mice  Rats  Horses  Elephants Characteristics  Largest number of mammals  Umbilical cord connects embryo to placenta  Food and oxygen exchanges via the umbilical cord  Gestation varies with types of placental (ex: human 40 weeks; elephant 2 years; cats 9 weeks)

Videos  World of Mammals World of Mammals  Different types of teeth Different types of teeth  Bill Nye: Animal Locomotion Bill Nye: Animal Locomotion  World of Mammals World of Mammals  Different types of teeth Different types of teeth  Bill Nye: Animal Locomotion Bill Nye: Animal Locomotion

For Next Time…  Read pgs  Define herbivore, carnivore and omnivore on index cards  Read pgs  Define herbivore, carnivore and omnivore on index cards

Mammals (Part 2) 6 th Grade Mini Lab 6 th Grade Mini Lab

Do Now…  How are herbivores, carnivores and omnivores different?

Objectives Students will…  Review characteristics of mammals  Complete Mini lab: infer how blubber insulates Students will…  Review characteristics of mammals  Complete Mini lab: infer how blubber insulates

Mini Lab: How Blubber Insulates  What is blubber? Why is it an important adaptation of mammals?  Lab procedures and instructions  Set up/Clean up  Complete Lab worksheet  What is blubber? Why is it an important adaptation of mammals?  Lab procedures and instructions  Set up/Clean up  Complete Lab worksheet

For Next Time…  Complete Self-Check Questions #1-3 and #5 on pg. 549 in science notebook  Bring in a flash drive  Complete Self-Check Questions #1-3 and #5 on pg. 549 in science notebook  Bring in a flash drive