5-LS2-1
The standard
Develop a model to describe the movement of matter among plants, animals, decomposers, and the environment.
Next Generation Science Standards
What this standard means
Students need to show how matter moves through an ecosystem. They should connect plants, animals, decomposers, air, water, soil, and waste in a model with arrows and labels. They need to understand that plants use air, water, and soil materials to make food, animals eat plants or other animals, and decomposers return matter to the soil.
Mastery looks like a clear model that tracks matter, not just energy. Students often mix up matter and energy, forget decomposers, or draw a one-way food chain with no return to the environment. Many also think plants get most of their food from soil instead of making it from air and water.
Ways to teach it
- Build a bottle ecosystem with soil, grass seed, pill bugs, and dead leaves, then have students diagram where matter moves each week.
- Ask students to explain in writing what happens to the matter in a dead leaf after it falls to the ground.
- Give students organism and material cards, then have them draw arrows showing matter movement and explain two arrows aloud.
- Use a school compost bin or lunch scraps photo to trace how food waste becomes soil material for new plant growth.
Plan a lesson for 5-LS2-1
Generate a complete lesson plan aligned to this standard, with objectives, activities, and materials. Free, no account needed.
Related standards
- MS-LS1-7
Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy as this matter mov...
- MS-LS2-3
Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.
- MS-ESS2-1
Develop a model to describe the cycling of Earth's materials and the flow of energy that drives this process.
- HS-ESS2-6
Develop a quantitative model to describe the cycling of carbon among the hydrosphere, atmosphere, geosphere, and biosphere.