National Geographic 6-12 Catalog 2008-2009 - (Page 2) National Geographic Extreme Explorer Engage and Motivate Reluctant Readers • Make nonfiction content accessible to striving students in grades 6–12 • Written at a third grade reading level, Extreme Explorer presents science and social studies content that appeals to middle and high school students who are struggling to read. LIFE SCIENCE Reading Strategy: After you read each section, summarize what you learned. This nebula was formed when a dying star shed its outer layers. PAUL ZAHL This scorpion glows blue under a special light. 8 AN R RT A/ROBE NASA/ES The Extreme Explorer website translates a selected article from each issue into Spanish and provides games and puzzles to extend the learning. NASA GO DD AR D SP AC E FLI GH T CE N TE R KIR SH NE (N ASA Reading strategies at the start of each story allow students to practice nonfiction literacy skills. Studyin Study ng Studying images from Hubble h s helped scientists learn more about the b y from Hubble has helped scientists learn m Hubble ha el ble le cientists ear c nt t h birth stars. at’s ot . o though. Hubbl is a o helping scie hough. ubble al help scien u ub elpin scientists understand lping de of stars. That’s not all, though. Hubble is also helping scientists understand what ha pens he othe happen t the other he f st r’s life. Stars do last fore star forever, you happens at the other end of a star’s life Stars don’t last forever, you see. They die. other star’s e. a s Take our un, for exampl It’s almost ve bill on ye s ld. t should remain Take our sun, for example. It’s almost five billion years old. It should remain as m sa o billi n year i s ou r sh abo another v billio b no illion Then wi s rt ill ol ow and it is for ab t ano er five billion years. Then it will start to cool down and turn for abou anoth about no en ed. t sun cools wi gro larger. may e arge rge big enough red. As the sun c ols, it will grow larger. It may even grow big enough to touch cools, will a that s e i called hat size ed giant. Earth! A star tha size is called a red giant giant. After a while, the sun will stop growing. It will shed its outer layers. Scientists used to think such shedding happened violently, in large explosions. Photos from Hubble, though, have shown that isn’t true. The outer layers of a dying star float away gently, like puffs of smoke. They form a nebula around the dying star. Later, it will fade to black and die. image: picture violently: with great force , HA RVA RD-S MITHS 9 NAS NAS A A, A E ESA , AN D K. NO LL (ST Dying Stars ONIAN CENTER FOR AST RO PH D PE TE R CH AL LIS YS IC S -G C) SF SC L) Looking Ahead Star birth, star death—Hubble has taught us about the lives of stars and much more. That is why people feel sorry that it is aging. This year, NASA will make repairs on the telescope. These repairs might be the last ones, though. Like a car you turn in for a new one, Hubble is nearly ready to be replaced. In 2013, another giant telescope will be launched. It will help us see space in new ways. When that happens, though, we can still thank Hubble. It opened our eyes, getting us ready to see what’s next. Wordwise atmosphere: layers of air around a planet gravity: pulling force that an object has light–year: the distance that light travels in a year (about ten trillion kilometers, or six trillion miles) Above is a bigger view of the exploding star shown at the right. Around it, a ring of gas glows like a string of pearls. 18 nebula: cloud of gas or dust in space red giant: large and fairly cool star 19 Text features and end-of-story glossary build academic vocabulary. Each Order Includes • Seven 24-page issues (September, October, November/December, January/February, March, April, May) • Eight-page Teacher’s Guide (one Teacher’s Guide with every 20 student copies) • FREE full-color classroom poster with every issue • FREE online resources on each magazine’s website • FREE monthly Teacher e-newsletter with tips for using Explorer and other teacher resources. 2 Exciting visuals will keep students interested as they learn core Science and Social Studies content. Order Information National Geographic Extreme Explorer Magazine 10–199 copies, per student 200+ copies*, per student Extreme Explorer product code 5XEXX0908 $3.95 $2.50 * Combine your school’s total subscriptions to get the best price. Orders must be placed by November 1, 2008, for the 2008–2009 school year. Minimum order is 10 copies per edition. You will receive your magazine in 4–6 weeks from order date. Note: 8% shipping and handling will be added to your order. NGSP.com 888-915-3276 http://www.ngsp.com
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