Lesson 8: How do plants grow and change? Lesson 9: What plants are in your area and how can you use them? Lesson 10: What are some of Earth's landforms? Lesson 11: What is the rock cycle? Lesson 12: How is the landscape changing in my area? Lesson 13: What is the ecosystem? Lesson 14: How does energy pass through an ecosystem? Lesson 15: How do ecosystems change over time?