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 Ja'Dell Davis is a Los Angeles native who currently divides her time between New York City and Madison, Wisconsin. She is currently a graduate student at the University of Wisconsin at Madison, pursing a PhD in Sociology. Ja’Dell previously taught high school in Philadelphia public schools, and implemented college access and academic enrichment programming in Chester, Pennsylvania and New York City in Manhattan’s Lower East Side neighborhood. Ja’Dell received her B.A. from Swarthmore College with a special major in History and Educational Studies, and a minor in Black Studies. She completed her M.S.Ed in Secondary School Education at the University of Pennsylvania. In addition to her studies and work in the education field, Ja’Dell is a dancer, musician, avid people watcher, and Scrabble enthusiast. This lesson is designed to teach the Common Core State Standard: Science & Technical Subjects : CCSS.ELA-Literacy.RST.6-8.4Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 6-8 texts and topics. CCSS.ELA-Literacy.RST.6-8.4 CCSS.ELA-Literacy.RST.6-8.1CCSS.ELA-Literacy.RST.6-8.1Cite specific textual evidence to support analysis of science and technical texts. CCSS.ELA-Literacy.RST.6-8.2CCSS.ELA-Literacy.RST.6-8.2Determine the central ideas or conclusions of a text; provide an accurate summary of the text distinct from prior knowledge or opinions.

2. In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process? © Marcella Miriello/Shutterstock

3. Australia’s iconic limestone stacks called the Twelve Apostles have been reduced to just eight stacks left standing. The same erosion that created these stone pillars continues to eat away at the base of each one. In 2005 the stack called “Judas” crashed into the sea, the most recent casualty of Indian Ocean tides. Despite today’s single-digit population, the name Twelve Apostles simply has too much recognition to change. However, the waves continue to dig at the cliffs above the beach, and may one day carve new stacks to join the ranks. In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process?

4. 1 Web SearchWhat is erosion? 2 Web Search What are the effects of wind erosion? 3 Web Search What is bio-erosion? What are its effects? 4 Web SearchHow is gravity involved in erosion? 5 Web SearchWhat are natural benefits of erosion? In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process?

5. 5 Minutes In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process?

6. 1 Web SearchWhat is erosion? 2 Web SearchWhat are the effects of wind erosion? 3 Web SearchWhat is bio-erosion? What are its effects? 4 Web SearchHow is gravity involved in erosion? 5 Web SearchWhat are natural benefits of erosion? In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process?

7. 1 Web SearchWhat is erosion? In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process?

8. 2 Web SearchWhat are the effects of wind erosion? In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process?

9. 3 Web SearchWhat is bio-erosion? What are its effects? In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process?

10. 4 Web SearchHow is gravity involved in erosion? In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process?

11. 5 Web SearchWhat are natural benefits of erosion? In addition to water erosion, what are different ways that erosion occurs in nature? Are there benefits to this process?