HS-LS2-5 Ecosystems: Interactions, Energy, and Dynamics

HS-LS2-5    Ecosystems: Interactions, Energy, and Dynamics

Students who demonstrate understanding can:

HS-LS2-5. Develop a model to illustrate the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere. [Clarification Statement: Examples of models could include simulations and mathematical models.] [Assessment Boundary: Assessment does not include the specific chemical steps of photosynthesis and respiration.]
The performance expectation above was developed using the following elements from the NRC document A Framework for K-12 Science Education:

Science and Engineering Practices

Developing and Using Models

Modeling in 9–12 builds on K–8 experiences and progresses to using, synthesizing, and developing models to predict and show how relationships among variables between systems and their components in the natural and designed worlds.

Disciplinary Core Ideas

LS2.B: Cycles of Matter and Energy Transfer in Ecosystems

PS3.D: Energy in Chemical Processes

  • The main way that solar energy is captured and stored on Earth is through the complex chemical process known as photosynthesis. (secondary)

Crosscutting Concepts

Systems and System Models

Connections to other DCIs in this grade-band:

HS.PS1.B ; HS.ESS2.D

Articulation of DCIs across grade-bands:

MS.PS3.D ; MS.LS1.C ; MS.LS2.B ; MS.ESS2.A

Common Core State Standards Connections: N/A

HS-LS2-5    Ecosystems: Interactions, Energy, and Dynamics

Students who demonstrate understanding can:

HS-LS2-5. Develop a model to illustrate the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere. [Clarification Statement: Examples of models could include simulations and mathematical models.] [Assessment Boundary: Assessment does not include the specific chemical steps of photosynthesis and respiration.]
The performance expectation above was developed using the following elements from the NRC document A Framework for K-12 Science Education:

Science and Engineering Practices

Developing and Using Models

Modeling in 9–12 builds on K–8 experiences and progresses to using, synthesizing, and developing models to predict and show how relationships among variables between systems and their components in the natural and designed worlds.

Disciplinary Core Ideas

LS2.B: Cycles of Matter and Energy Transfer in Ecosystems

PS3.D: Energy in Chemical Processes

  • The main way that solar energy is captured and stored on Earth is through the complex chemical process known as photosynthesis. (secondary)

Crosscutting Concepts

Systems and System Models

Connections to other DCIs in this grade-band:

HS.PS1.B ; HS.ESS2.D

Articulation of DCIs across grade-bands:

MS.PS3.D ; MS.LS1.C ; MS.LS2.B ; MS.ESS2.A

Common Core State Standards Connections: N/A

HS-LS2-5    Ecosystems: Interactions, Energy, and Dynamics

Students who demonstrate understanding can:

HS-LS2-5. Develop a model to illustrate the role of photosynthesis and cellular respiration in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere. [Clarification Statement: Examples of models could include simulations and mathematical models.] [Assessment Boundary: Assessment does not include the specific chemical steps of photosynthesis and respiration.]
The performance expectation above was developed using the following elements from the NRC document A Framework for K-12 Science Education:

Science and Engineering Practices

Developing and Using Models

Modeling in 9–12 builds on K–8 experiences and progresses to using, synthesizing, and developing models to predict and show how relationships among variables between systems and their components in the natural and designed worlds.

Disciplinary Core Ideas

LS2.B: Cycles of Matter and Energy Transfer in Ecosystems

PS3.D: Energy in Chemical Processes

  • The main way that solar energy is captured and stored on Earth is through the complex chemical process known as photosynthesis. (secondary)

Crosscutting Concepts

Systems and System Models

Connections to other DCIs in this grade-band:

HS.PS1.B ; HS.ESS2.D

Articulation of DCIs across grade-bands:

MS.PS3.D ; MS.LS1.C ; MS.LS2.B ; MS.ESS2.A

Common Core State Standards Connections: N/A

* The performance expectations marked with an asterisk integrate traditional science content with engineering through a Practice or Disciplinary Core Idea.

The section entitled “Disciplinary Core Ideas” is reproduced verbatim from A Framework for K-12 Science Education: Practices, Cross-Cutting Concepts, and Core Ideas. Integrated and reprinted with permission from the National Academy of Sciences.