Mississippi Science ENV.1.3
The Standard
- ENV.1
- Students will investigate the interdependence of diverse living organisms and their interactions with the components of the biosphere.
Use models to explain why the flow of energy through an ecosystem can be illustrated by a pyramid with less energy available at the higher trophic levels compared to lower levels.
2026 Mississippi College- and Career-Readiness Standards for Science · Biosphere and Biodiversity
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students build an energy pyramid for a food chain and show how much energy reaches each feeding level. They explain why less energy passes on when organisms use energy, release heat, or leave food uneaten.
What Mastery Looks Like
- Given 1,000 energy units in plants and a sample 10% transfer rate, students label herbivores with 100 units and carnivores with 10. They explain that the numbers show available energy, not a count of organisms.
Common Misconceptions
- Students may think energy cycles back to plants or that a predator gets all the energy in its prey. Others may mistake the width of each level for the number of organisms.
How to Assess It
- Exit ticket: Draw an energy pyramid with 1,000 units in plants and 100 in herbivores. Estimate the energy in carnivores and explain why less reaches them.
Lesson moves
Ways to Teach It
Move 10 of 100 beans from a producer cup to an herbivore cup, then one to a carnivore cup; label untransferred energy.
Ask pairs to write why the top of an energy pyramid is narrow, using heat and uneaten food in their answer.
Give pairs grass, rabbit, and fox cards; have them arrange the cards and add 1,000, 100, and 10 sample energy units.
Have students draw two paths for grain, eaten by people or fed to cattle first, and compare the energy reaching people.
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Printable ENV.1.3 Worksheet
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Related Standards
- BIO.5.4
Develop and use models to describe the flow of energy and amount of biomass through food chains, food webs, and food pyramids.
- L.5.3B.2
Develop and use a food chain model to classify organisms as producers, consumers, or decomposers. Trace the energy flow to explain how each group of organisms o...
- L.6.3.5
Develop and use food chains, webs, and pyramids to analyze how energy is transferred through an ecosystem from producers (autotrophs) to consumers (heterotrophs...
- FB.6.5
Use models to analyze the flow of energy through food chains, webs, and pyramids.
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