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Raz lp17 abouttrees_samp

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This is a scientific book about tree.

This is a scientific book about tree.

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    Raz lp17 abouttrees_samp Raz lp17 abouttrees_samp Presentation Transcript

    • LEVELED READER • P About TreesA Reading A–Z Level P Leveled Reader Word Count: 769 About Trees Written by Sherr y Sterling Visit www.readinga-z.com www.readinga-z.com for thousands of books and materials.
    • About Trees See all the Reading A-Z materials VISIT www.readinga-z.com The Online Reading Program Leveled Books High-Frequency Word Books Lesson Plans Alphabet Books Worksheets Poetry Benchmark Books Read-Alouds & Running Records Vocabulary Books Systematic Phonics Lessons Reader’s Theater Decodable Books Comprehension Quizzes Sound/Symbol Books Fluency Passages Retelling Rubrics English * Spanish * French All for one LOW yearly fee Photo Credits: Cover, back cover, title page, 3, 5, 6, 7, 8, 12 (bottom left), 14, 15: © ArtToday; page 4: © Getty Images; page 9 (main): © Robert Estall/CORBIS; page 9 (inset): © Royalty-Free/Getty Images; page 10: Royalty-Free/Getty Images; page 11 (main): Royalty-Free/Getty Images; page 11 (bottom left), 12 (all except bottom left): © Hemera Technologies; page 13: © David Aubrey/CORBIS Written by Sherry Sterling About Trees Level P Leveled Reader Correlation © 2007 Learning A–Z LEVEL P Written by Sherry Sterling Fountas & Pinnell N All rights reserved. Reading Recovery 21 www.readinga-z.com www.readinga-z.com DRA 30
    • People look tiny when standing next to giant sequoias. Table of ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . 4 IntroductionLeaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Trees are the tallest living plants.Branches . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Redwood trees can grow as tall as aTrunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 30-story building. Giant sequoias canRoots . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 weigh as much as 3,000 large pickup trucks, making them one of the heaviestSap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 living things. Trees also live a long time.Seeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Many trees alive today were full grownGrowing . . . . . . . . . . . . . . . . . . . . . . . . . . 13 long before the United States became a country. But these massive trees shareConclusion . . . . . . . . . . . . . . . . . . . . . . . 14 something with all plants—they makeGlossary/Index . . . . . . . . . . . . . . . . . . . 16 their own food. 3 4
    • LeavesImagine being able to makeyour own food withoutcooking or even going toa restaurant! Leaves makefood for trees by changing deciduousenergy from sunlight intofood. This important workis done by chlorophyll(KLOR-uh-fill), the greencoloring in leaves.Leaves come in all shapesand sizes. Most deciduous(dee-SIJ-oo-us) trees havewide, thin leaves, while Yellow and brown leaves fall from this deciduous tree.most conifers have needle-like leaves. Conifers keep conifer In the fall, the leaves of deciduous treestheir needles through all show their true colors. These true colorsseasons. Only the oldest are yellows, oranges, and browns, whichneedles fall to the ground. hide under green chlorophyll all springDeciduous trees lose their and summer. We see these colors in theleaves every fall. fall after leaves stop making chlorophyll. 5 6
    • Branches TrunkBranches are the arms that hold up a Tubes in the tree’s trunk carry watertree’s leaves. Branches spread leaves out from the roots up to the leaves. Theyto get as much sunlight as they can. The also carry sap, or food, down from theleaves give shade to other living things leaves to the roots. These tubes are likeon sunny days. highways, carrying traffic back and forth. They are close to the outside ofBranches start out as twigs, then they the tree, just under the bark.grow thicker each year. As a tree grows,its bark cracks open so the branches andtrunk can expand. New bark is alwaysgrowing under the old, ready to protectthe tree. If new bark gets stripped away,a tree can die. branch leaves twigs trunk roots Layers of bark protect trees. 7 8
    • active highways old growth bark Tree roots reach deep into the ground. sap water Roots Trees need soil to keep growing. RootsLightning zapped a hole through the middle of this oak tree, but it are part of the highways. They soak upcontinues to grow. water and nutrients from the soil. Roots also keep the soil in place when it rains.A tree doesn’t need the middle of its Without the roots of trees and plants,trunk to live. The middle is made of soil washes away.rings of old growth, not active highways.That’s why a tree can keep growing Trees are stuck in the soil because theireven if the middle is hollowed out after roots reach deep into the ground. It’sa lightning strike. All it needs is enough a good thing they can make their ownbark to protect its highways. food, since they can’t move to get it. 9 10
    • Sap SeedsLeaves use water plus sunlight and air Deciduous trees grow flowers, whichto make food for the tree. This food is make seeds that are inside fruit or nuts.in the form of liquid sugars. Sometimes Conifers make cones instead of flowers.people eat some kinds of tree sugars for The cones do the same job for conifersfood. You’ve probably had tree sugar for that flowers do on other trees. Theybreakfast—pouring it over your pancakes make seeds to grow more trees. Eachor waffles. Have you guessed what tree seed holds its own supply of food tosugar this is? It’s maple syrup, and it keep it alive until it’s ready to sprout.comes from the food, or sap, of a sugar pine nutsmaple tree.A bucket applecollects seedssap froma tap in amaple tree. apple fruit pineconePancakesswim inmaplesyrup. apple blooms acorn 11 12
    • Growing ConclusionHow does a tall While trees look like they aren’t doingtree grow from a much, they are working. They makesmall seed? The their own food by changing sunlightseed soaks up and air into sugars. This helps keepwater until it can the air clean, too. seed leavessend out a root. Trees are homes and food for birdsWith more water, and other animals. Look to see whichleaves inside the animals make homes in trees near yourseed case grow home. Someuntil they push up animals,and out. Once this includinghas happened, we humans, eatsay the seed has seed case sap, fruit,sprouted. and seedsNow the sprout from trees. rootscan make its own Others eatfood and no This shows how a sprout grows bark and from a seed.longer needs the leaves.seed’s store of energy. The seed leaveswill make food for the new sprout. Holes in trees make safe homes for many owls. 13 14
    • Glossary bark the rough covering on a tree’s branches and trunk (p. 7) chlorophyll green coloring in leaves that can turn water, air, and sunlight into food (p. 5) conifers trees, such as pine and spruce, with needle-like leaves (p. 5) deciduous trees that lose their leaves in the fall trees and grow them in the spring (p. 5) nutrients things from soil and food that living things use to stay healthy and grow (p. 10) protect to keep something from harm (p. 7) sap the liquid sugars trees make for their food (p. 8)Trees do many things. Tree leaves shade seed case the outer covering of a seed (p. 13)us on sunny days. They also shade new sprout to begin growing (p. 12)sprouts from the heat of the sun so they Indexwon’t burn. Tree roots hold the soil in chlorophyll, 5, 6 maple syrup, 11place that trees and other plants need to cones, 12 redwood, 4grow. From saplings to mighty giants, fruit, 12, 14 sprout, 13trees stand tall. giant sequoia, 4 sugar maple, 11 15 16
    • Send Quality Books Home With All Your Students www.readinga-z.com The Online Reading Program Leveled Books Lesson Plans Worksheets Assessments Comprehension & Fluency Resources Phonics Materials Alphabet Books More Instant access to Thousands of Downloadable Books & Reading Resources (Including English, Spanish, and French)Low Annual Subscriptions