Science
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Unit 1: Living Things and Ecosystems?
- Lesson 1: What is an ecosystem?
- Lesson 2: What is the role of producers in an ecosystem?
- Lesson 3: What is the role of consumers in an ecosystem?
- Lesson 4: What is the role of decomposers in an ecosystem?
- Lesson 5: How do matter and energy move in an ecosystem?
- Lesson 6: What makes an ecosystem healthy or unhealthy?
- Lesson 7: How do ecosystems change?
- Lesson 8: How do humans change ecosystems?
Unit 4: Earth, The Moon, and The Stars
- Lesson 1: What does gravity do?
- Lesson 2: Why is the sun brighter than other stars?
- Lesson 3: Why is there day and night?
- Lesson 4: How do shadows change during the day and year?
- Lesson 5: How do stars seem to move during the night and year?
- Lesson 6: How does the moon seem to move and change shape?
- Lesson 7: What tools do scientists use to observe space?
Unit 2: Earth Systems
- Lesson 1: What are Earth's four systems?
- Lesson 2: How do Earth systems produce weather and climate?
- Lesson 3: How do Earth systems change Earth's surface?
- Lesson 4: How do farming and industry affect Earth's systems?
- Lesson 5: How do people's everyday lives affect Earth's systems?
- Lesson 6: What can people do to protect Earth's systems?
Unit 3: Changes in Matter
- Lesson 1: What is matter made of?
- Lesson 2: Why are materials different?
- Lesson 3: How can substances be identified?
- Lesson 4: How do scientists know when substances change?
- Lesson 5: What causes substances to change?
- Lesson 6: How do changes in substances affect their weights?
- Lesson 7: How do engineers improve materials?