1. Teacher Guide This lesson is designed to teach kids to ask a critical thinking question that you can’t just put into a search box to solve. To do that, we encourage them with smaller questions that search can help them answer. Make sure that you read the notes for each slide: they not only give you teaching tips but also provide answers and hints so you can help the kids if they are having trouble. Remember, you can always send feedback to the Bing in the Classroom team at BingInTheClassroom@Microsoft.com. You can learn more about the program at bing.com/classroom and follow the daily lessons on our Partners In Learning site. BingInTheClassroom@Microsoft.combing.com/classroomPartners In Learning site Want to extend today’s lesson? Consider using Skype in the Classroom to arrange for your class to chat with another class in today’s location. And if you are using Windows 8, you can also use the Bing apps to learn more about this location and topic; the Travel and News apps in particular make great teaching tools.Skype in the Classroom Alice Keeler is a mother of 5 and a teacher in Fresno, California. She has her B.A in Mathematics, M.S. in Educational Media Design and Technology and is currently working on a doctorate in Educational Technology with an emphasis in games and simulations. EdTech speaker, blogger, and presenter. Founder of coffeeEDU, a 1 hour conference event for educators. New Media Consortium Horizon report advisory panel member. High school math teacher for 14 years. Currently teaching pre-service teachers curriculum, instruction and technology at California State University Fresno. Teaches online for Fresno Pacific University in the Masters in Educational Technology. Passionate that kids are not failures, researches gamification in education to increase student motivation. This lesson is designed to teach the Common Core State Standard: English Language Arts CCSS.ELA-LITERACY.RST.9-10.1 CCSS.ELA-LITERACY.RST.9-10.1 Cite specific textual evidence to support analysis of science and technical texts, attending to the precise details of explanations or descriptions. CCSS.ELA-LITERACY.RST.9-10.8CCSS.ELA-LITERACY.RST.9-10.8 Assess the extent to which the reasoning and evidence in a text support the author's claim or a recommendation for solving a scientific or technical problem. CCSS.ELA-LITERACY.W.9-10.1.ECCSS.ELA-LITERACY.W.9-10.1.E Provide a concluding statement or section that follows from and supports the argument presented.

2. How do extreme habitats, such as caves, develop unique formations, and life? © Carsten Peter/Getty Images

3. There are several notable caves in Phong Nha-Kẻ Bàng National Park in Vietnam. But just five years ago, the world learned of the park’s Son Doong Cave, which is now considered the largest known cave on Earth. Aside from its immense size, Son Doong contains other unique features as well, including a forest inside the cave, a rushing river, and these limestone cave pearls. Cave pearls form when fast-moving water pulls calcite from the surrounding stone, depositing it around a grain of sand. As more water flows past, the calcite layer grows and coats the sand evenly, making a spherical shape. Some cave pearls can even take on a white gloss similar to the pearls that form inside mollusks. How do extreme habitats, such as caves, develop unique formations, and life?

4. 1 Web SearchWhat are the 5 distinct zones that a cave may have? 2 Web SearchHow does air and light vary in each of the cave zones? 3 Web Search Identify 3 different extreme habitats that would potentially result in unique formations or life. 4 Web Search What are unique formations or life that can be found in extreme habitats? Identify at least 3 from 3 different types of extreme habitats. 5 ThinkingWhy are scientists particularly interested in studying extreme habitats? How do extreme habitats, such as caves, develop unique formations, and life?

5. 5 Minutes How do extreme habitats, such as caves, develop unique formations, and life?

6. 1 Web SearchWhat are the 5 distinct zones that a cave may have? 2 Web SearchHow does air and light vary in each of the cave zones? 3 Web Search Identify 3 different extreme habitats that would potentially result in unique formations or life. 4 Web Search What are unique formations or life that can be found in extreme habitats? Identify at least 3 from 3 different types of extreme habitats. 5 ThinkingWhy are scientists particularly interested in studying extreme habitats? How do extreme habitats, such as caves, develop unique formations, and life?

7. 1 Web SearchWhat are the 5 distinct zones that a cave may have? How do extreme habitats, such as caves, develop unique formations, and life?

8. 2 Web SearchHow does air and light vary in each of the cave zones? How do extreme habitats, such as caves, develop unique formations, and life?

9. 3 Web Search Identify 3 different extreme habitats that would potentially result in unique formations or life. How do extreme habitats, such as caves, develop unique formations, and life?

10. 4 Web Search What are unique formations or life that can be found in extreme habitats? Identify at least 3 from 3 different types of extreme habitats. How do extreme habitats, such as caves, develop unique formations, and life?

11. 5 ThinkingWhy are scientists particularly interested in studying extreme habitats? How do extreme habitats, such as caves, develop unique formations, and life?