Plants | Project Based Learning
Students investigate how plants interact with Earth systems by designing and presenting a small-scale, evidence-based model or case study of how plant communities affect soil, water, carbon, and climate processes. Working in teams, students analyze data, synthesize scientific sources, and create a practical product that explains plant roles in a chosen ecosystem or environmental problem.
| Term | Definition |
|---|---|
| Photosynthesis | The process by which plants use light energy, carbon dioxide, and water to produce sugars and release oxygen. |
| Transpiration | The release of water vapor from plant leaves, which influences local humidity and the water cycle. |
| Carbon sequestration | The long-term storage of carbon in plant biomass, soils, or other reservoirs. |
| Biogeochemical cycle | A cycle that moves elements such as carbon, nitrogen, and water through living and nonliving parts of Earth systems. |
| Evapotranspiration | The combined transfer of water from land to the atmosphere through evaporation and plant transpiration. |
| Primary productivity | The rate at which plants convert energy into biomass in an ecosystem. |
| Soil formation | The development of soil through weathering, organic matter accumulation, and biological activity, including plant roots and litter. |
Introduce the project with a compelling question such as, 'How do plants shape the functioning of Earth systems in a specific place or under a specific environmental stress?' Present a brief case example or image set showing deforestation, reforestation, urban greening, or wetland restoration.
Observe the case, respond to the driving question, and identify initial ideas about how plants affect land, water, air, and climate.
Explain project expectations, deliverables, timeline, and success criteria. Clarify that the final product should use evidence from scientific sources and data. Provide a choice of project formats, such as a poster, slide deck, policy brief, or concept model.
Review the criteria, ask clarification questions, and select or confirm project teams and topic focus.
Provide curated sources and data sets. Circulate to coach students on source evaluation, scientific accuracy, and data interpretation. Prompt students to connect plant processes to specific Earth system impacts.
Collect evidence from sources, annotate key ideas, analyze graphs or tables, and record claims, evidence, and reasoning in a shared organizer.
Support teams as they synthesize findings into a coherent product. Encourage inclusion of diagrams, labeled processes, and at least one data visualization. Check for scientific precision and completeness.
Create the project product, organize evidence, draft explanations, and prepare a concise speaking plan or annotated display.
Facilitate a structured peer feedback protocol focused on clarity, evidence quality, and scientific logic. Provide sentence stems for constructive feedback if needed.
Exchange drafts or prototypes, give and receive feedback, and revise content for accuracy and impact.
Invite brief team share-outs or a gallery walk. Highlight recurring themes such as carbon storage, water regulation, soil stabilization, and ecosystem resilience.
Present key findings, compare projects, and note common scientific patterns across cases.
End with a brief whole-class reflection: What is one way plants act as Earth system engineers, and what evidence from today best supports that idea? Have students add one lingering question to inform future study.
Students will complete a one-page reflection or continuation task: summarize the project’s main claim, identify one additional source or data point that strengthens the argument, and write two questions they still have about plant-Earth system interactions.