# Lesson Title: Modeling Earth's Materials Cycling and Energy Flow

### Objective: Students will be able to use a model to describe the cycling of Earth's materials and the flow of energy that drives this process, as described in NGSS standard HS-ESS2-6.

NGSS Standard: HS-ESS2-6. Develop and use a model to describe the cycling of Earth's materials and the flow of energy that drives this process.

Materials:

• Computer with internet access
• Projector
• Handouts with information about Earth's materials cycling and energy flow (e.g. diagrams, graphs)

Warm-Up:

• Begin the lesson by asking students what they know about Earth's materials cycling and energy flow.
• Write their responses on the board and use them to lead a brief discussion about the importance of understanding these processes in order to understand how Earth's systems function.

Direct Instruction:

• Introduce the concept of modeling and explain that models are simplified representations of complex systems that help us understand and make predictions about those systems.
• Provide examples of different types of models (e.g. physical models, mathematical models) and explain how they can be used to represent different aspects of Earth's materials cycling and energy flow.
• Show the class a diagram or graph representing Earth's materials cycling and energy flow and explain that they will be using this model to understand how these processes work.

Guided Practice:

• Have the class work together to identify the different parts of the model (e.g. Earth's atmosphere, lithosphere, hydrosphere) and the ways in which they interact.
• Have the students discuss the role of energy in driving these interactions and how it is transferred between the different parts of the system.
• Have the students brainstorm examples of how human activities (e.g. burning fossil fuels, deforestation) can affect Earth's materials cycling and energy flow.

Independent Practice:

• Assign students the task of creating their own model of Earth's materials cycling and energy flow using a tool of their choice (e.g. diagram, graph, physical model).
• Have students present their models to the class and explain their reasoning for the choices they made.

Conclusion:

• Review the concept of modeling and how it can be used to understand Earth's materials cycling and energy flow.
• Emphasize the importance of understanding these processes in order to make informed decisions about how we interact with and impact the planet.