【Houghton Mifflin 分级阅读-G2】（30-8）Dinosaur Fossils

by Karen J. Rothbardt HOUGHTON MIFFLIN 1033121 HOUGHTON MIFFLIN Online Leveled Books Level: I DRA: 16 Science Strategy: Monitor/Clarify Word Count: 370 2.6.27 Build Vocabulary PHOTOGRAPHY CREDITS: Cover © PIXTAL/age fotostock. 1 © PIXTAL/Age Fotostock. 2 Katja Zimmermann/ Getty Images. 3 Heinrich van den Berg/Getty Images. 4 © PIXTAL/Age Fotostock. 5 © Tom Bean/CORBIS. 6 © Louie Psihoyos/CORBIS. 7 Sinclair Stammers/Photo Researchers, Inc. 8 © Richard T. Nowitz/CORBIS. 9 © PIXTAL/age fotostock. Copyright © by Houghton Mifflin Company. All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying or recording, or by any information storage or retrieval system without the prior written permission of the copyright owner unless such copying is expressly permitted by federal copyright law. With the exception of nonprofit tran- scription into Braille, Houghton Mifflin is not authorized to grant permission for further uses of this work. Permission must be obtained from the individual copyright owner as identified herein. Address requests for permission to make copies of Houghton Mifflin material to School Permissions, Houghton Mifflin Company, 222 Berkeley Street, Boston, MA 02116. Printed in China ISBN-13: 978-0-547-02992-4 ISBN-10: 0-547-02992-6 1 2 3 4 5 6 7 8 9 SDP 15 14 13 12 11 10 09 08 by Karen J. Rothbardt 2_029924_VR6_2BL_DinosaurFossils1 12_029924_VR6_2BL_DinosaurFossils1 1 1/23/08 11:23:51 AM1/23/08 11:23:51 AM 2 Suppose you went for a walk and found a bone inside a rock. Would you be amazed? 2_029924_VR6_2BL_DinosaurFossils2 22_029924_VR6_2BL_DinosaurFossils2 2 1/23/08 11:23:54 AM1/23/08 11:23:54 AM 3 You might have discovered a dinosaur fossil! If you found a real dinosaur, it might have growled at you. But fossils don’t growl. Fossil 2_029924_VR6_2BL_DinosaurFossils3 32_029924_VR6_2BL_DinosaurFossils3 3 1/23/08 11:24:28 AM1/23/08 11:24:28 AM 4 A fossil is left by an animal or a plant from long ago. One kind of fossil is a footprint fossil. Footprint fossil 2_029924_VR6_2BL_DinosaurFossils4 42_029924_VR6_2BL_DinosaurFossils4 4 1/23/08 11:24:46 AM1/23/08 11:24:46 AM 5 By looking at a footprint fossil, scientists can tell if a dinosaur walked on two legs or four legs. They can also tell how fast the dinosaur moved. 2_029924_VR6_2BL_DinosaurFossils5 52_029924_VR6_2BL_DinosaurFossils5 5 1/23/08 11:24:53 AM1/23/08 11:24:53 AM 6 Egg fossils and nest fossils are two other kinds of fossils. Sometimes only egg fossils are found. Sometimes only nest fossils are found. And sometimes they are found together. Egg fossil 2_029924_VR6_2BL_DinosaurFossils6 62_029924_VR6_2BL_DinosaurFossils6 6 1/23/08 11:25:15 AM1/23/08 11:25:15 AM 7 Scientists can look at an egg fossil and tell if a dinosaur ate meat or plants. Scientists can look at a nest fossil and tell the exact number of eggs that were in the nest. Nest fossil 2_029924_VR6_2BL_DinosaurFossils7 72_029924_VR6_2BL_DinosaurFossils7 7 1/23/08 11:25:52 AM1/23/08 11:25:52 AM 8 Scientists must remove dirt from the fossils to study them. They study dinosaur bones to learn how big the dinosaurs were. They also learn what the dinosaurs ate and how they moved. 2_029924_VR6_2BL_DinosaurFossils8 82_029924_VR6_2BL_DinosaurFossils8 8 1/23/08 11:26:12 AM1/23/08 11:26:12 AM 9 Bone fossils can be made into a dinosaur skeleton. Dinosaur skeletons are put in museums. The museum guards them to keep them safe. Dinosaur skeleton 2_029924_VR6_2BL_DinosaurFossils9 92_029924_VR6_2BL_DinosaurFossils9 9 1/23/08 11:26:30 AM1/23/08 11:26:30 AM 10 The best place to see dinosaur fossils is at a museum. People at the museum can explain even more about fossils. You can even buy a souvenir at the end of your visit. The next time you go for a walk, look carefully at the rocks. You never know what you might find! 2_029924_VR6_2BL_DinosaurFossils10 102_029924_VR6_2BL_DinosaurFossils10 10 1/23/08 11:26:34 AM1/23/08 11:26:34 AM 11 Responding TARGET SKILL Word Builder What kinds of things have you discovered? Make a word web around the word discover. Copy this web and add more words. Text to World Many people discover fossils. Write a few sentences describing the kinds of fossils they can find. Use some words from the Word Builder. Write About It discover footprints nest ? ? 2_029924_VR6_2BL_DinosaurFossils11 112_029924_VR6_2BL_DinosaurFossils11 11 1/23/08 11:26:47 AM1/23/08 11:26:47 AM 12 amazed discovered exact explained growled guard remove souvenirs TARGET VOCABULARY TARGET STRATEGY Question Ask questions about what you are reading. If you uncover something new, you have it. 2_029924_VR6_2BL_DinosaurFossils12 122_029924_VR6_2BL_DinosaurFossils12 12 1/23/08 11:26:51 AM1/23/08 11:26:51 AM by Karen J. Rothbardt HOUGHTON MIFFLIN 1033121 HOUGHTON MIFFLIN Online Leveled Books Level: I DRA: 16 Science Strategy: Monitor/Clarify Word Count: 370 2.6.27 Build Vocabulary Untitled