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 coffeecue, 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: Mathematics CCSS.MATH.CONTENT.HSG.MG.A.3CCSS.MATH.CONTENT.HSG.MG.A.3 Apply geometric methods to solve design problems (e.g., designing an object or structure to satisfy physical constraints or minimize cost; working with typographic grid systems based on ratios).* CCSS.ELA-LITERACY.RST.11-12.7CCSS.ELA-LITERACY.RST.11-12.7 Integrate and evaluate multiple sources of information presented in diverse formats and media (e.g., quantitative data, video, multimedia) in order to address a question or solve a problem. 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.

2. Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge? © Imaginechina/Corbis

3. China’s Aizhai Bridge stretches across a valley near Jishou, a city in Hunan province. Connecting two tunnels through the hills of the nearby Wuling Mountains, the Aizhai Bridge holds the distinct record of being the highest and longest tunnel-to-tunnel bridge in the world. The deck of the span is 1,150 above the valley floor. This picture was taken the day the bridge officially opened to traffic, on March 31, 2012. Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge?

4. 1 Web SearchWhat are different styles of bridges? 2 Image Search Use Bing images to locate other suspension style bridges, observe similarities in the topography. Search other bridge types to contrast. 3 Web Search What is the cost of constructing a suspension bridge versus a cantilever or other type of bridge? 4 Web SearchWhy can a suspension bridge span farther than other bridge types? 5 Video Search Locate a video demonstrating construction of a suspension bridge. Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge?

5. 5 Minutes Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge?

6. 1 Web SearchWhat are different styles of bridges? 2 Image Search Use Bing images to locate other suspension style bridges, observe similarities in the topography. Search other bridge types to contrast. 3 Web Search What is the cost of constructing a suspension bridge versus a cantilever or other type of bridge? 4 Web SearchWhy can a suspension bridge span farther than other bridge types? 5 Video Search Locate a video demonstrating construction of a suspension bridge. Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge?

7. 1 Web SearchWhat are different styles of bridges? Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge?

8. 2 Image Search Use Bing images to locate other suspension style bridges, observe similarities in the topography. Search other bridge types to contrast. Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge?

9. 3 Web Search What is the cost of constructing a suspension bridge versus a cantilever or other type of bridge? Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge?

10. 4 Web SearchWhy can a suspension bridge span farther than other bridge types? Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge?

11. 5 VIdeo Search Locate a video demonstrating construction of a suspension bridge. Why is the Aizhai bridge a suspension bridge instead of a cantilever style or other style bridge?