Chapter 1 Living Things
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Lesson 1.1 What is a Living Thing?
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Lesson 1.2 What Are Some Kinds of Living Things?
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Lesson 1.3 What is a Life Cycle?
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Chapter 2 Plants
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Lesson 2.1 What Are Some Plant Structures?
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Lesson 2.2 How Do Plants Reproduce?
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Lesson 2.3 How Do Plants Make Food?
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Chapter 3 Places to Live
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Lesson 3.1 What is an Ecosystem?
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Lesson 3.2 What is Life Like in Forests?
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Lesson 3.3 What is Life Like in Dry Places?
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Lesson 3.4 What is Life Like in Wet Places?
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Lesson 3.5 How Do People Affect the Environment?
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Chapter 4 Your Body's Health and Safety
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Lesson 4.1 What Factors Affect Your Health?
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Lesson 4.2 What Causes Disease?
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Lesson 4.3 What is Your Immune System?
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Chapter 5 A Healthy Heart
Chapter 6 Healthy Lungs
Chapter 7 Earth's Surface
Chapter 8 Weather and Climate
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Lesson 8.1 What is Earth's Atmosphere?
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Lesson 8.2 What Causes Weather Patterns?
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Lesson 8.3 What Factors Affect Climate?
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Chapter 9 Earth, the Sun, and the Moon
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Lesson 9.1 What is in the Solar System?
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Lesson 9.2 How Does Earth Move in Space?
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Lesson 9.3 Why Does the Moon Seem to Change Shape?
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Chapter 10 Energy
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Lesson 10.1 How Does Energy Affect Matter?
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Lesson 10.2 How Does Thermal Energy Move?
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Lesson 10.3 What is Sound?
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Lesson 10.4 What is Light?
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Chapter 11 Motion and Forces
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Lesson 11.1 How Can You Describe Motion?
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Lesson 11.2 How Do Forces Affect Motion?
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Lesson 11.3 What Common Forces Do We Use?
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