Difference between revisions of "HS-LS2-4"

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| ab = Assessment is limited to proportional reasoning to describe the cycling of matter and flow of energy.
 
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| Level5 = Revise a mathematical representation to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.
 
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| Level4 = Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.
 
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| Level3 = Use a mathematical representation to make a qualitative or quantitative claim that matter cycles and/or energy flows among organisms in an ecosystem.
 
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| Level2 = Use a mathematical representation to identify a qualitative or quantitative claim that matter cycles or energy flows among organisms in an ecosystem.
 
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| Level1 = Use a mathematical representation to identify a qualitative or quantitative evidence, from those provided, that matter cycles or energy flows among organisms in an ecosystem.
 
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| Level5 = Revise a mathematical representation to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.
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| Level4 = Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.
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| Level3 = Use a mathematical representation to make a qualitative or quantitative claim that matter cycles and/or energy flows among organisms in an ecosystem.
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| Level2 = Use a mathematical representation to identify a qualitative or quantitative claim that matter cycles or energy flows among organisms in an ecosystem.
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| Level1 = Use a mathematical representation to identify a qualitative or quantitative evidence, from those provided, that matter cycles or energy flows among organisms in an ecosystem.
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== Vocabulary ==
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Terms from the [[Biology Glossary]] that come from this standard or from the released exam questions that assess it.
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<div class="vocab-subhead">From this standard</div>
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<div class="vocab-list" style="column-width:14em;">
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* algae
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* atmosphere
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* biomass
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* carbon
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* cellular respiration
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* claim
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* conservation of energy
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* conservation of matter
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* cycling of matter
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* design solution
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* ecosystem
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* energy flow
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* energy pyramid
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* energy transfer
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* flow of energy
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* food web
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* hydrogen
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* matter
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* matter cycle
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* nitrogen
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* oxygen
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* pyramid of biomass
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* soil
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* trophic level
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* waste
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</div>
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<div class="vocab-subhead">From released exam questions</div>
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<div class="vocab-list" style="column-width:20em;">
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* [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|autotroph (autotrophic nutrition)]] – June 2025
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* [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|carbon pool]] – June 2025
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* [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|carbon storage]] – June 2025
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* [[Questions:Organisms of the Tibetan Plateau#q5|carnivore]] – June 2025
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* [[Questions:Humongous Fungus#q1|cell]] – Aug 2026
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* [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|closed system]] – June 2025
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* [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|compound]] – June 2025
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* [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|decomposition]] – June 2025
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* [[Questions:Humongous Fungus#q1|ecological pyramid]] – Aug 2026
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* [[Questions:Humongous Fungus#q1|fruiting body]] – Aug 2026
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* [[Questions:Humongous Fungus#q1|fungus]] – Aug 2026
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* [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|herbivore]] – June 2025
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* [[Questions:Humongous Fungus#q1|hyphae]] – Aug 2026
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* [[Questions:Humongous Fungus#q1|mycelium]] – Aug 2026
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* [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|ocean]] – June 2025
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* [[Questions:Humongous Fungus#q1|photosynthesis]] – Aug 2026
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* [[Questions:The Forest Gardener#q3|population]] – June 2026, [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|June 2025]]
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* [[Questions:Organisms of the Tibetan Plateau#q5|prey]] – June 2025
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* [[Questions:Organisms of the Tibetan Plateau#q5|producer]] – June 2025
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* [[Questions:The Forest Gardener#q3|rainforest]] – June 2026
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* [[Questions:Carbon! Where Does It Come From? Where Does It Go?#q1|sediment]] – June 2025
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* [[Questions:Humongous Fungus#q1|species]] – Aug 2026
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</div>
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<div class="vocab-subhead">Implied by this standard</div>
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<div class="vocab-list">
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* ten percent rule – [[Questions:Humongous Fungus#q1|Aug 2026 Humongous Fungus]] labels the levels of an ecological pyramid 100%, 10% and 1% of the energy; the [[Questions:Organisms of the Tibetan Plateau#q5|June 2025 Organisms of the Tibetan Plateau]] rubric credits "energy is lost to heat as you move up trophic levels".
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</div>
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== {{Resourcesheading}} ==
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Latest revision as of 17:47, 27 September 2026

← HS-LS2-3
HS-LS2-5 →

Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.

Clarification statement: Emphasis is on using a mathematical model such as a pyramid of biomass/energy to describe the transfer of energy from one trophic level to another and that matter and energy are conserved as matter cycles and energy flows through ecosystems. Emphasis is on atoms and molecules such as carbon, oxygen, hydrogen and nitrogen being conserved as they move through an ecosystem.

Assessment boundary: Assessment is limited to proportional reasoning to describe the cycling of matter and flow of energy.

Assessment

What assessment of HS-LS2-4 might look like on a NY state exam.

Exam Cluster Question
August 2026 Humongous Fungus Question 13
June 2026 The Forest Gardener Question 35
August 2025 Driving the Florida Panther to Extinction Question 43
June 2025 Carbon! Where Does It Come From? Where Does It Go? Question 1
Organisms of the Tibetan Plateau Question 21

Performance Level Descriptions

PLDs communicate the knowledge and skills expected of students to demonstrate proficiency in each Learning Standard. NYS assessments classify student performance into one of five levels.

☐
Level 1: Use a mathematical representation to identify a qualitative or quantitative evidence, from those provided, that matter cycles or energy flows among organisms in an ecosystem.
☐
Level 2: Use a mathematical representation to identify a qualitative or quantitative claim that matter cycles or energy flows among organisms in an ecosystem.
☐
Level 3: Use a mathematical representation to make a qualitative or quantitative claim that matter cycles and/or energy flows among organisms in an ecosystem.
☐
Level 4: Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.
☐
Level 5: Revise a mathematical representation to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.

Vocabulary

Terms from the Biology Glossary that come from this standard or from the released exam questions that assess it.

From this standard
  • algae
  • atmosphere
  • biomass
  • carbon
  • cellular respiration
  • claim
  • conservation of energy
  • conservation of matter
  • cycling of matter
  • design solution
  • ecosystem
  • energy flow
  • energy pyramid
  • energy transfer
  • flow of energy
  • food web
  • hydrogen
  • matter
  • matter cycle
  • nitrogen
  • oxygen
  • pyramid of biomass
  • soil
  • trophic level
  • waste
From released exam questions
Implied by this standard

Resources

Examples and discussion of resources for the learning, teaching, and assessment of HS-LS2-4.

Pixel beaver This section could be expanded upon. You can help out by adding to this section.


NGSS Dimensions

Performance expectation HS-LS2-4 was developed using the following elements from the NRC document A Framework for K-12 Science Education:

Science and Engineering Practices
  • Using Mathematics and Computational Thinking
    • Use mathematical representations of phenomena or design solutions to support claims
Disciplinary Core Ideas
  • LS2.B: Cycles of Matter and Energy Transfer in Ecosystems
    • Plants or algae form the lowest level of the food web. At each link upward in a food web, only a small fraction of the matter consumed at the lower level is transferred upward, to produce growth and release energy in cellular respiration at the higher level. Given this inefficiency, there are generally fewer organisms at higher levels of a food web. The chemical elements that make up the molecules of organisms pass through food webs and into and out of the atmosphere and soil, and they are combined and recombined in different ways. At each link in an ecosystem, matter and energy are conserved.
    • (NYSED) When matter is cycled through organisms and ecosystems, some of the matter reacts to release energy for life functions, some is stored in newly made structures, and some is eliminated as waste.
Crosscutting Concepts
  • Energy and Matter
    • Energy can be transferred between one place and another place, between objects and/or fields, or between systems.
Page contributors: Caroline Leonard, Conrad Richman
Biology | HS. Matter and Energy in Organisms and Ecosystems
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