目录 基础级 1 Chapter 1 Social Studies ★History and Geography Theme: People Move from Place to Place Unit 01 Moving to a New Community 2 Unit 02 A Nation of Immigrants 4
Theme: Economics Unit 03 Earning, Spending, and Saving Money 6 Unit 04 Our Needs and Wants 8
Vocabulary Review 1 10
Theme: Living in Different Climates Unit 05 World Climate Regions 12 Unit 06 Extreme Weather Conditions 14
Theme: Using Resources Unit 07 Goods and Resources 16 Unit 08 Goods and Services 18
Vocabulary Review 2 20 Wrap-Up Test 1 22
Chapter 2 Science Theme: A World of Plants Unit 09 Kinds of Plants 24 Unit 10 How Do Plants Make Food? 26
Theme: A World of Animals Unit 11 Classifications of Animals 28 Unit 12 What Do Animals Need to Live and Grow? 30
Vocabulary Review 3 32
Theme: Food Chains Unit 13 What Makes Up a Food Chain? 34 Unit 14 Herbivores, Carnivores, and Omnivores 36
Theme: Ecosystems Unit 15 What Are Ecosystems? 38 Unit 16 Dinosaurs: Extinct but Still Popular 40
Vocabulary Review 4 42
Theme: The Weather and the Water Cycle Unit 17 The Weather 44 Unit 18 The Water Cycle 46
Theme: The Earth’s Resources Unit 19 Rocks, Minerals, and Soil 48 Unit 20 Fossils and Fossil Fuels 50
Vocabulary Review 5 52 Wrap-Up Test 2 54
Chapter 3 Mathematics ★ Literature ★ Visual Arts ★ Music Theme: Geometry Unit 21 Points, Lines, and Line Segments 56 Unit 22 Polygons 58
Theme: Measurement Unit 23 The U.S. Customary System and the Metric System 60 Unit 24 Measurement Word Problems 62
Vocabulary Review 6 64
Theme: Myths from Ancient Greece Unit 25 Gods and Goddesses in Greek Myths 66 Unit 26 Titans, Heroes, and Monsters in Greek Myths 68
Theme: Myths from Ancient Rome Unit 27 Same Gods, Different Names 70 Unit 28 Cupid and Psyche 72
Vocabulary Review 7 74
Theme: Visual Arts Unit 29 Architecture and Architects 76 Unit 30 Sculptures and Sculptors 78
Theme: A World of Music Unit 31 Elements of Music 80 Unit 32 What’s Your Vocal Range? 82
Vocabulary Review 8 84 Wrap-Up Test 3 86 Answers and Translations 87
基础级 2 Chapter 1 Social Studies ★History and Geography Theme: Geography Skills Unit 01 What Is a Globe? 2 Unit 02 Understanding Hemispheres 4
Theme: The West Region of the United States Unit 03 The Environment of the West 6 Unit 04 The California Gold Rush 8
Vocabulary Review 1 10
Theme: The Southwest Region of the United States Unit 05 The Environment of the Southwest 12 Unit 06 The Economy of the Southwest 14
Theme: The Environment of the United States Unit 07 The Environment of the Southeast 16 Unit 08 The Environment of the Northeast 18
Vocabulary Review 2 20
Theme: The Industries of the United States Unit 09 The Leading Industries of the Northeast 22
Theme: The Midwest Region and the Mountain States of the United States Unit 10 The Midwest Region 24 Unit 11 The Mountain States 26
Vocabulary Review 3 28 Wrap-Up Test 1 30
Chapter 2 Science Theme: A World of Animals Unit 12 How Do Animals Grow? 32 Unit 13 What Is Metamorphosis? 34
Theme: Adaptation Unit 14 How Do Animals Respond to Changes? 36 Unit 15 Animal Adaptations for Survival 38
Vocabulary Review 4 40
Theme: The Earth’s Changing Surface Unit 16 What Changes the Earth’s Surface? 42 Unit 17 Fast Changes to the Earth’s Surface 44
Theme: The Universe Unit 18 Our Solar System 46 Unit 19 The Sun and Other Stars 48
Vocabulary Review 5 50
Theme: Matter Unit 20 What Is Matter? 52 Unit 21 Changes in Matter 54
Theme: Our Bodies Unit 22 Taking Care of Our Bodies 56 Unit 23 The Six Nutrients 58
Vocabulary Review 6 60 Wrap-Up Test 2 62
Chapter 3 Mathematics ★ Language ★ Visual Arts ★ Music Theme: Fractions Unit 24 Fractions 64 Unit 25 Understanding Fractions 66
Theme: Decimals Unit 26 Understanding Decimals 68 Unit 27 Reading and Writing Fractions and Decimals 70
Vocabulary Review 7 72
Theme: Learning about Sentences Unit 28 What Kind of Sentence Is It? 74 Unit 29 Punctuation Marks 76
Theme: Visual Arts Unit 30 Appreciating Artwork 78 Unit 31 Creating Designs 80
Theme: A World of Music Unit 32 Elements of Music 82
Vocabulary Review 8 84 Wrap-Up Test 3 86 Answers and Translations 87
基础级3 Chapter 1 Social Studies ★ History and Geography Theme: Geography Skills Unit 01 Reading Maps 2 Unit 02 Mountains, Rivers, and Deserts of the World 4
Theme: The World Economy Unit 03 A World of Trade 6 Unit 04 Ancient Trade 8
Vocabulary Review 1 10
Theme: Ancient Egypt Unit 05 The Gift of the Nile 12 Unit 06 The Culture of Egypt 14
Theme: Ancient Greece Unit 07 Ancient Greece 16 Unit 08 Socrates and Plato 18
Vocabulary Review 2 20
Theme: Ancient Rome Unit 09 Ancient Rome 22 Unit 10 The Founding of Rome 24
Theme: The Middle Ages Unit 11 Europe in the Middle Ages 26 Unit 12 Feudalism 28
Vocabulary Review 3 30 Wrap-Up Test 1 32
Chapter 2 Science Theme: Inquiry Skills and Scientific Tools Unit 13 What Is the Scientific Method? 34 Unit 14 Scientific Tools 36
Theme: A World of Living Things Unit 15 What Are Cells? 38 Unit 16 Classifying Living Things 40
Vocabulary Review 4 42
Theme: Heredity and Traits Unit 17 What Is Heredity? 44 Unit 18 What Are Traits? 46
Theme: The History of the Earth Unit 19 The Formation of the Earth 48 Unit 20 Continental Drift 50
Vocabulary Review 5 52
Theme: Energy Unit 21 Light and Heat 54 Unit 22 Electricity 56
Theme: Motion and Force Unit 23 Motion and Force 58
Vocabulary Review 6 60 Wrap-Up Test 2 62
Chapter 3 Mathematics ★ Language ★ Music Theme: Fractions Unit 24 Understanding Fractions 64 Unit 25 Word Problems with Fractions 66
Theme: Geometry Unit 26 Lines and Angles 68
Theme: Learning about Language Unit 27 Prefixes and Suffixes 70 Unit 28 Tenses 72
Vocabulary Review 7 74
Theme: Grammar Unit 29 Complete Sentences 76 Unit 30 Proofreading 78
Theme: A World of Music Unit 31 Musical Notation 80 Unit 32 Composers and Their Music 82
Vocabulary Review 8 84 Wrap-Up Test 3 86 Answers and Translations 87
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