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Unit A: How Living Things Function

Chapter 1: Parts of Plants

Concept

• Parts of Plants

Reading Skill

• Lesson 1: How Do Plants Meet Their Needs?
• Lesson 2: How Do Parts Help Classify Plants?
• Lesson 3: How Do Their Parts Help Plants Survive?

Chapter 2: Classifying Animals

Concept

• Classifying Animals

Reading Skill

• Lesson 1: Which Animals Are Vertebrates?
• Lesson 2: Which Animals Are Invertebrates?
• Lesson 3: Which Animals?

Chapter 3: Living Things Grow and Reproduce

Concept

• Living Things Grow and Reproduce

Reading Skill

• Lesson 1: What Are Plant Life Cycles?
• Lesson 2: What Are Some Animal Life Cycles?
• Lesson 3: Can Living Things Vary?