Mississippi Science L.5.3B.2
The Standard
- L.5.3B
- Students will demonstrate an understanding of a healthy ecosystem with a stable web of life and the roles of living things within a food chain and/or food web, including producers, primary and secondary consumers, and decomposers.
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 obtains energy.
2026 Mississippi College- and Career-Readiness Standards for Science · Ecology and Interdependence
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students build a food chain with arrows that show where energy goes. They label plants as producers, animals as consumers, and fungi as decomposers. They explain that plants use sunlight to make food, animals eat other organisms, and fungi get energy from dead matter.
What Mastery Looks Like
- Given grass, a grasshopper, a frog, and fungi, a student labels each role and draws arrows from food to eater. They explain how sunlight starts the chain and draw an arrow from dead organisms to fungi.
Common Misconceptions
- Students may point arrows toward what gets eaten, such as from a frog to a grasshopper, instead of toward the organism receiving energy. They may call fungi producers because fungi grow in soil, or say decomposers return energy to plants rather than recycling nutrients.
How to Assess It
- Give students a sketch with the Sun, grass, a rabbit, dead grass, and a mushroom. Ask them to label the three living organisms, add energy arrows, and write where the mushroom gets energy.
Lesson moves
Ways to Teach It
Give pairs Sun, grass, rabbit, fox, dead rabbit, and mushroom cards; have them use yarn arrows to show where each gets energy.
Ask, 'Why does an arrow point from grass to rabbit, and where would you draw an arrow to a mushroom?'
Run a card-sort race: pairs place grass, rabbit, fox, and mushroom pictures under producer, consumer, or decomposer, then explain each choice.
Show a photo of a compost pile and trace energy from dead leaves to fungi, then name the leaves' original energy source.
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Printable L.5.3B.2 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.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.
- ENV.1.3
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 compar...
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