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Math Maker Lab PDF

160 Pages·44.13 MB·English
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Senior editors Michelle Crane, Sam Kennedy Senior designer Stefan Podhorodecki MM AATT HH Editor Rachel Thompson US editor Kayla Dugger US executive editor Lori Hand Designers Mik Gates, Jim Green Illustrators Simon Tegg Managing editor Fran Baines Managing art editor Phil Letsu Production editor Kavita Varma Senior production controller Samantha Cross Jacket designers Tanya Mehrotra Design development manager Sophia MTT Managing jackets editor Saloni Singh Jackets editorial coordinator Priyanka Sharma Jacket DTP designer Rakesh Kumar Picture researcher Myriam Megharbi Publisher Andrew Macintyre Associate publishing director Liz Wheeler Art director Karen Self Publishing director Jonathan Metcalf Consultant Branka Surla Photographers Stefan Podhorodecki, Michael Wicks First American Edition, 2021 Published in the United States by DK Publishing 1450 Broadway, Suite 801, New York, NY 10018 Copyright © 2021 Dorling Kindersley Limited DK, a Division of Penguin Random House LLC 21 22 23 24 25 10 9 8 7 6 5 4 3 2 1 001–318165–Jul/2021 All rights reserved. Without limiting the rights under the copyright reserved above, no part of this publication may be reproduced, stored in or introduced into a retrieval system, or transmitted, in any form, or by any means (electronic, mechanical, photocopying, recording, or otherwise), without the prior written permission of the copyright owner. Published in Great Britain by Dorling Kindersley Limited A catalog record for this book is available from the Library of Congress. ISBN: 978-0-7440-2752-5 Printed and bound in China For the curious www.dk.com The Smithsonian Established in 1846, the Smithsonian is the world’s largest museum and research complex, dedicated to public education, national service, and scholarship in the arts, sciences, and history. It includes 19 museums and galleries and the National Zoological Park. The total number of artifacts, works of art, and specimens in the Smithsonian’s collection is estimated at 154 million. This book was made with Forest Stewardship Council ™ certified paper—one small step in DK’s commitment to a sustainable future. For more information go to www.dk.com/our-green-pledge UUSS__000022--000033__IImmpprriinntt__ttiittllee..iinndddd 22 1155//0022//22002211 1166::3377 S M I T H S O N I A N MM AATT HH MM AA KK EE RR LL AA BB 27 SUPER-COOL PROJECTS Build · Invent · Create · Discover UUSS__000022--000033__IImmpprriinntt__ttiittllee..iinndddd 33 1155//0022//22002211 1166::3388 CONTENTS 6 NUMBERS 42 SHAPES 8 Number fridge 44 Symmetrical pictures magnets 50 Picture ball 12 Make your own abacus 56 Wrapping paper 18 Times table and gift bag fortune tellers 62 Scaling up pictures 22 Math bingo 68 Origami jumping frog 26 Fibonacci 72 Tessellating patterns spiral collage 78 Impossible triangle 32 Dreamcatcher 82 Pop-up cards 38 Bake and share a pizza A WORD ABOUT GLUES Several of the projects in this book require the use of glue. We have suggested that you use ordinary white glue MATHEMATICS FACTS WARNING or glue sticks, but in some cases it will be easier to use This symbol highlights extra This symbol identifies a glue gun if you have one, as this glue dries much faster. information that explains a task that might be A glue gun should only ever be used by an adult, and they the math behind dangerous. Be sure to must be sure to follow the manufacturer’s guidelines. each project. have adult supervision. UUSS__000044--000055__CCoonntteennttss..iinndddd 44 1122//0022//22002211 1155::4466 88 MEASUREMENTS 126 Shadow puppets 90 Speed trials 130 Grab bag 98 Friendship bracelets 134 Marble run 106 Fun fruit drinks 140 Optical illusions 110 Chocolate truffles 144 Make your 114 Chocolate box own clock 118 Popcorn sale tray 150 Craft stick bird feeder 158 Glossary 160 Index UUSS__000044--000055__CCoonntteennttss..iinndddd 55 1122//0022//22002211 0099::4400 UUSS__000066--000077__NNuummbbeerrss__cchhaapptteerr__ooppeenneerr..iinndddd 66 1122//0022//22002211 0099::4400 NUMBERS You can’t do math without numbers. There are 10 number symbols, but they can be used to write or count as many numbers as you can imagine. In this chapter, you’ll find projects that will help you understand numbers, from making your own fridge magnets to using the power of fractions to divide a pizza fairly. You’ll also make an abacus to help you master complex calculations and a dreamcatcher that will test your times tables. UUSS__000066--000077__NNuummbbeerrss__cchhaapptteerr__ooppeenneerr..iinndddd 77 1122//0022//22002211 0099::4400 FAMILY MATH CHALLENGE NUMBER FRIDGE MAGNETS With some adhesive magnetic sheets and colored card stock, you can make your very own number magnets. Use them to set challenges for your family on the fridge and see who will be the first to figure out the answers to your fiendish questions. UUSS__000088--001111__FFrriiddggee__MMaaggnneettss..iinndddd 88 1122//0022//22002211 0099::4400 NUMBER FRIDGE MAGNETS 9 HOW TO MAKE MATH YOU WILL USE NUMBER FRIDGE • MEASUREMENT to make sure your numbers are the perfect size. MAGNETS • EQUATIONS to create devious addition, subtraction, multiplication, and division challenges for your family. These magnets are quick and easy to make, • ALGEBRA to take your fridge math to especially if you have adhesive-backed magnetic the next level. sheets. You can use different-colored card stock to make your numbers stand out on the fridge. Zero is a special number. As a digit, Time Difficulty it can be used to 60 minutes Easy change the place value of a number. WHAT YOU NEED 1 On a piece of colored card stock or paper, draw a zero, with a rough height of 13/4 in (4.5 cm) Ruler and a width of 11⁄2 in (3.5 cm). Make sure the number is bold so that it won’t be too flimsy when it’s cut out. k Pencil Scissors Glue stic 2 Carefully cut around the outside of the number with a pair of scissors. Hole punch Magnetic sheet 81/2x11 card stock in several different colors UUSS__000088--001111__FFrriiddggee__MMaaggnneettss..iinndddd 99 1122//0022//22002211 0099::4400 10 NUMBERS 4 Using scissors, carefully cut around the number again, this time cutting the 3 Stick your number onto a piece of magnetic magnetic sheet, too. sheet with glue or the sheet’s adhesive backing. Ask an adult to help Make sure you stick it to the nonmagnetic side. if this is tricky. You will need to make more than one of each number. 5 To cut the middle out of the zero, use a hole 6 Repeat steps 1–5 using different-colored card punch to create a hole. You can then push stock for digits 1–9. You could stick multiple your scissor tips through to continue cutting. numbers to one sheet and cut them out in one go. 7 Repeat steps 1–5, but this time draw the mathematical symbols for addition, subtraction, and multiplication. The symbols make it fast and simple to write out equations. 8 Next, draw the symbols for division and equals. Draw a thin line linking the different parts of the symbol so the magnet stays in one piece. Repeat steps 2–5 for these symbols. UUSS__000088--001111__FFrriiddggee__MMaaggnneettss..iinndddd 1100 1122//0022//22002211 0099::4400

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