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Math Concept Reader
On the Menu: Bamboo, Figs, and Other Tasty Treats Math Concept Reader ca42os_lay_070102aF_cp.indd 1 1/7/07 12:34:47 AM DIGITAL FINAL PROOF ca42os_lay_070102aF_cp.indd 2 1/7/07 12:34:47 AM DIGITAL FINAL PROOF On the Menu: Bamboo, Figs, and Other Tasty Treats By Sarah Mastrianni Math Concept ReaderMath Concept Reader Copyright © Gareth Stevens, Inc. All rights reserved. Developed for Harcourt, Inc., by Gareth Stevens, Inc. This edition published by Harcourt, Inc., by agreement with Gareth Stevens, Inc. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any informa- tion storage and retrieval system, without permission in writing from the copyright holder. Requests for permission to make copies of any part of the work should be addressed to Permissions Department, Gareth Stevens, Inc., 330 West Olive Street, Suite 100, Milwaukee, Wisconsin 53212. Fax: 414-332-3567. HARCOURT and the Harcourt Logo are trademarks of Harcourt, Inc., registered in the United States of America and/or other jurisdictions. Printed in the United States of America ISBN 13: 978-0-15-360188-0 ISBN 10: 0-15-360188-4 1 2 3 4 5 6 7 8 9 10 179 16 15 14 13 12 11 10 09 08 07 ca42os_lay_070102aF_cp.indd 3 1/7/07 12:34:47 AM DIGITAL FINAL PROOF Chapter 1: Bonkers for Bamboo and Eucalyptus Amanda is a zookeeper. Her days are always busy. There are more than 2,000 animals to feed at her zoo. From apes to zebras, zookeepers take care of them all. As a zookeeper, Amanda has many different responsibilities. T o day Amanda’s first job is to make sure there is enough food for the Giant Panda for the week. The panda is nearly two years old, but he eats 12 pounds of bamboo a day! Amanda does the math. 7 × 1 2 = 8 4; 84 pounds of bamboo Twelve pounds a day for seven days is 84 pounds of bamboo. Amanda has more than 100 pounds of fresh bamboo. There is plenty to last the week. ca42os_lay_070102aF_cp.indd 2 1/7/07 12:34:49 AM DIGITAL FINAL PROOF Giant Pandas love bamboo. ey can eat 12 pounds of bamboo a day! ( Most of the bamboo fed to the pandas is grown right at the zoo. There are four acres of land that are used to grow bamboo here. Zoo workers harvest eight tons of the plant each year. That means about two tons of bamboo grow on each acre. Amanda is always amazed by that fact, as well as by the large number of other uses for bamboo. It isn’t just used to feed pandas. S ome people use bamboo to make furniture, forks, and spoons. It can even be used to make paper. There are so many kinds of bamboo at Amanda’s zoo. Some visitors spend a whole afternoon just learning about this incredible, tall grass. Koalas must eat a lot of eucalyptus leaves to get all the nutrients they need. ) Amanda stops to see the koalas before starting her next task. She is surprised. The koalas are awake. Koalas can sleep as many as 20 hours each day. They are often found nestled in the fork of a tree. A manda knows some people think koalas are cuddly because their fur looks thick and soft. However, their fur actually feels like the wool on a sheep. One koala weighs only about 20 pounds. It can eat as much as three pounds of food a day. Amanda knows they eat a lot because eucalyptus is not very nutritious, or healthy. The koalas have to eat large amounts of the leaves to get all the nutrients they need. * Amanda needs to order more food for the koalas. The koalas are picky eaters. They eat only the leaves of the eucalyptus tree. Koalas eat between one and three pounds of eucalyptus leaves each day. Koalas are one of very few species that can eat eucalyptus. These leaves contain toxins, or poisons, so most animals won’t eat them. Koalas, however, have adapted to the toxin. Their bodies have found a way to not be harmed by the plant. A manda orders enough of the leaves for three pounds of food each day for each of the five koalas. She must order 15 pounds of food to last one day. 5 × 3 = 15; 15 pounds of eucalyptus 5 × 3 = 15 Each koala will get 3 pounds of eucalyptus a day. Chapter 2: Apples and Figs – One Pound Each Please Amanda smiles as she leaves the koalas. She heads over to the zoo’s newest mammal—an orangutan. This orangutan is on loan from another zoo. It will be here for several months. O r angutans are the only great apes that come from Asia. The other great apes come from Africa. Amanda is excited to have this ape at the zoo because she knows orangutans tend to have their own personalities. They often have strong likes and dislikes. I n t heir native environment, orangutans eat bark, leaves, flowers, and insects. Most importantly, they eat fruit. Amanda checks a thick binder of notes that came with the orangutan. She reads that this orangutan loves apples and figs. ca42os_lay_070102aF_cp.indd 6 1/7/07 12:34:59 AM DIGITAL FINAL PROOF Orangutans in the wild and in zoos love to eat fruit. is orangutan has a mouth full of figs! , In the wild, orangutans spend most of their lives in trees. They swing from branch to branch. Nearly all of the food orangutans eat grows in the treetops. Rain fills leaves with water for them to drink. A manda wants to be sure she has enough fruit for the orangutan for the next six days. She checks her supplies. Amanda weighs the fruit on a scale. She sees she has 12 pounds of apples and figs. The animal should have about two pounds of fruit each day. She does the math. 1 2 ÷ 6 = 2; 2 pounds of fruit She has plenty of fruit for the orangutan. Amanda leaves some fruit out before she heads to her next stop. Welcome to the Zoo! May I help you? Zoo Volunteer - Amanda has been busy making sure there is enough food for the animals. Now she is happy to meet a group of trained volunteers. They help at the zoo in many ways. T oday, Amanda has three jobs for the volunteers. She needs help greeting visitors at the zoo’s entrance and planting beds of flowers in one of the zoo’s many gardens. She also needs help repairing an empty zoo building. It is being fixed up in order to house some new animal exhibits. A manda is thrilled to see that nine volunteers are at the zoo. She is always happy to have extra help. She must figure out how many volunteers to assign to each job. [...]... at the delivery entrance, the four trucks are waiting for her Each truck carries two tons of hay The drivers have paperwork Amanda must sign for the delivery 10 ca42os_lay_070102aF_cp.indd 10 1/7/07 12:35:06 AM 2 Tons of Hay 2 Tons of Hay 2 Tons of Hay 2 Tons of Hay 4×2=8 The four trucks delivered 8 tons of hay Amanda makes sure the trucks are delivering exactly what she ordered before she signs the. .. inside each ball Then she gives the balls to the elephants who try to get food out through the holes They spend hours playing with treat balls They usually kick them around, but sometimes an elephant will stomp on one! Amanda stops to play with the baby elephant after leaving treat balls filled with carrots for the elephants Amanda wants to stuff each of the three treat balls with carrots for the elephants... how many hours does a hippo graze in one week? Remember, there are seven days in a week 2 There are four giraffes at a watering hole at the zoo During the course of the day, they each drink 10 gallons of water How many gallons of water do the four giraffes drink in all? 3 There are three kangaroo exhibits at the zoo and a total of 12 kangaroos Each exhibit has the same number of kangaroos How many...Gardening Construction Welcome to the Zoo! 9÷3=3 There are three volunteers for each job Amanda lists the three jobs she needs help with on her clipboard She asks if anyone has a special interest because she wants to put the people in jobs they will enjoy All the people say they are just happy to help out and will do any of the three jobs She figures out that with nine... for their elephants Seeing the hay reminds Amanda to think about other things elephants eat She knows that hay is not the only food in their diets They also eat a lot of carrots Amanda decides this is a good time to weigh some carrots which she will later put inside treat balls for the elephants Elephants enjoy the treat-filled balls They are large and very hard to break They have small holes in them... three people to work on each job 9 ÷ 3 = 3; 3 people for each job Amanda asks three people to help at the entrance She asks three more volunteers who grow flowers at home to help with the garden The remaining three volunteers leave to work on the building Amanda will check on the volunteers later DIGITAL FINAL PROOF Chapter 3: The Elephants Need Their Hay and Carrots! Once Amanda knows the volunteers are... heads down the zoo path to see the elephants The carrots will be a tasty treat for the large animals Guide 1 Guide 2 Guide 3 Guide 4 Guide 5 Guide 6 12 ÷ 6 = 2 Each tour guide will get 2 stacks of pamphlets Soon Amanda heads to the main office and sees new pamphlets in a box on her desk The pamphlets tell visitors about the elephants at the zoo They have many interesting facts including how much the elephants... checks on a food delivery Four trucks carrying several tons of hay for the elephants have arrived at the zoo Hay is just one of the foods elephants eat They also eat large amounts of leaves, grass, and tree bark Elephants are such large animals They can eat for nearly twenty hours a day Trucks with food and supplies do not come through the main zoo entrance They have a special place where they enter the. .. much they sleep Amanda needs to set out the pamphlets for six tour guides who will work tomorrow The box contains 12 stacks of pamphlets 12 ÷ 6 = 2; 2 stacks of pamphlets Twelve stacks of pamphlets divided among six tour guides equal two stacks of pamphlets for each guide She places two stacks of pamphlets on a table for each of the six tour guides The tour guides will find them in the morning Another... what she ordered before she signs the papers Amanda knows there are eight tons of hay since each truck carries two tons 4 × 2 = 8; 8 tons of hay Perfect—that is exactly what she ordered Amanda signs the delivery paperwork She smiles and thanks the truck drivers The drivers, who deliver all kinds of food to the zoo, head off to unload the hay near the elephants Elephants are plant eaters Amanda knows it . hole at the zoo. During the course of the day, they each drink 10 gallons of water. How many gallons of water do the four giraffes drink in all? 3 . There are three kangaroo exhibits at the zoo. food for the koalas. The koalas are picky eaters. They eat only the leaves of the eucalyptus tree. Koalas eat between one and three pounds of eucalyptus leaves each day. Koalas are one of very. eucalyptus. These leaves contain toxins, or poisons, so most animals won’t eat them. Koalas, however, have adapted to the toxin. Their bodies have found a way to not be harmed by the plant. A manda