A teaching sequence from the Extinction unit of upd8 wikid Polar bears Activity 3 – Trouble A teaching sequence from the Extinction unit of upd8 wikid year 7 upgrade 1

Expected Learning: Explore what is causing polar bears to struggle to survive. 3 Activity 3: Trouble

Engage Elicit Explore Explain Elaborate Extend Evaluate From what you’ve seen so far, can you tell me how polar bears are adapted to arctic conditions? 4 Activity 3: Trouble 3 3

But look how skinny this bear is. He’s starving! Engage Elicit Explore Explain Elaborate Extend Evaluate But look how skinny this bear is. He’s starving! 5 Activity 3: Trouble 4 4

Engage Elicit Explore Explain Elaborate Extend Evaluate Polar bears eat seals. Seals feed under the ice, but they’re mammals like us, so they need to breathe air. 6 Activity 3: Trouble 5 5

Have you spotted the seal yet? Engage Elicit Explore Explain Elaborate Extend Evaluate Have you spotted the seal yet? 7 Activity 3: Trouble 6 6

They keep breathing holes open like this one. Engage Elicit Explore Explain Elaborate Extend Evaluate They keep breathing holes open like this one. 8 Activity 3: Trouble 7 7

In March, pups are born in a snow den over one of the holes. Engage Elicit Explore Explain Elaborate Extend Evaluate In March, pups are born in a snow den over one of the holes. 9 Activity 3: Trouble 8 8

Imagine being a polar bear. How would you catch the seals? Engage Elicit Explore Explain Elaborate Extend Evaluate Imagine being a polar bear. How would you catch the seals? 10 Activity 3: Trouble 9 9

Which of your adaptations would help you? Engage Elicit Explore Explain Elaborate Extend Evaluate SS1 Which of your adaptations would help you? Do seals have adaptations that help them escape? 11 Activity 3: Trouble 10 10

_________________________________________________________________ Picture credits Picture Slide Credit _________________________________________________________________ Starving polar bear 5 and 12 Giles Breton Seal at breathing hole 6, 7 and 10 Andrew Johnson Breathing hole 8 Nicolas Brown Seal den 9 Jim and Louise Wholey Agitated polar bear 11 Claude Lecours Camping on ice 13 Kathleen M. Heideman Sea ice extent 14 and 15 NASA Polar bear on land 16 Noel Rasmussen Activity from the Extinction unit © Association for Science Education and Centre for Science Education 2010. Teachers and others who download this material may use it freely within their institution. For any other usage consult the upd8 team, upd8@ase.org.uk  ASE and upd8 are not responsible for any revision that may be made to the material after it has been downloaded. © Association for Science Education and Centre for Science Education 2010 This page may have been changed from the original