목차

Chapter 1
Social Studies · History and Geography

Theme: Technology Changes the World
Unit 01 How Transportation Has Changed 8
Unit 02 Inventors and Inventions 10

Theme: Government
Unit 03 Choosing Our Leaders 12
Unit 04 Presidents’ Day in February 14
Vocabulary Review 1 16

Theme: The World around Us
Unit 05 Countries Have Neighbors 18
Unit 06 The Amazon Rainforest 20

Theme: Protecting the Earth
Unit 07 Protecting the Earth 22
Unit 08 The World’s Endangered Animals 24
Vocabulary Review 2 26

Theme: World Religions
Unit 09 World Religions 28
Unit 10 Religious Holidays 30

Theme: Europeans Come to the New World
Unit 11 Early Travelers to America 32
Unit 12 The Pilgrims and Thanksgiving 34
Vocabulary Review 3 36
Wrap-Up Test 1 38

Chapter 2
Science

Theme: Our Earth
Unit 13 Inside the Earth 40
Unit 14 Earthquakes and Volcanoes 42

Theme: The Solar System
Unit 15 Why Does the Moon Seem to Change? 44
Unit 16 The First Man on the Moon 46
Vocabulary Review 4 48

Theme: Electricity
Unit 17 Electricity 50
Unit 18 Conserving Electricity 52

Theme: Motion and Energy
Unit 19 Motion and Forces 54
Unit 20 Magnets 56
Vocabulary Review 5 58
Theme: Sound
Unit 21 What Is Sound? 60
Unit 22 Sounds and Safety 62

Theme: The Human Body
Unit 23 The Organs of the Human Body 64
Unit 24 The Five Senses 66
Vocabulary Review 6 68
Wrap-Up Test 2 70

Chapter 3
Mathematics · Language · Visual Arts · Music

Theme: Numbers and Operations
Unit 25 Word Problems 72
Unit 26 Place Value 74

Theme: Multiplication and Division
Unit 27 Multiplication and Division 76
Unit 28 Skip Counting Equal Groups 78
Vocabulary Review 7 80

Theme: Myths
Unit 29 What Are Myths? 82
Unit 30 Prometheus Brings Fire 84

Theme: Learning about Language
Unit 31 Nouns 86
Unit 32 Some Common Sayings 88
Vocabulary Review 8 90

Theme: Visual Arts
Unit 33 Realistic Art and Abstract Art 92
Unit 34 Picasso and His Work 94

Theme: A World of Music
Unit 35 Many Kinds of Music 96
Unit 36 Modern Music 98
Vocabulary Review 9 100
Wrap-Up Test 3 102