Unit 3 — November: Plant Systems and Structure
Description
Students explore plant biology through hands-on investigations of plant structure and function. The unit begins with basic plant needs and reproduction, including a pollination game and exploration of pollinator decline. Students observe plant vasculature using food dyes and study cross-sections of stems. They dissect seeds, conduct soil experiments with nutrients and pH, and examine plant cells using craft materials and microscopes. Students investigate transpiration, photosynthesis, and cellular respiration through experiments with transpiration measurements and light-color studies. The unit emphasizes the interconnectedness of plant systems and environmental factors.
Essential Questions
- What structures do plants have and what functions do they perform?
- How do plants transport water and nutrients?
- What do seeds need to germinate and grow?
- How do plants obtain and use energy?
- What role do pollinators play in plant reproduction?
Learning Objectives
- Identify and describe the major parts of plants and their functions.
- Explain how plant vasculature transports water and nutrients.
- Design and conduct experiments to test seed germination requirements.
- Investigate soil properties and their effects on plant growth.
- Observe and identify plant cells and organelles.
- Measure and analyze transpiration rates under different conditions.
- Explain photosynthesis and its importance to life on Earth.
Supplemental Resources
- Post-it notes for pollination game activities
- Markers and craft materials (model magic, poster board) for cell construction
- Colored pencils for labeling plant diagrams
- Graph paper for recording transpiration and light experiment data
- Highlighters for emphasizing key concepts in notes
Crosscutting Concepts
Disciplinary Core Ideas
Earth and Space Sciences
Engineering, Technology, and Applications of Science
Life Sciences
Science and Engineering Practices
Students read and analyze informational texts about agriculture, food science, natural resources, and animal science topics throughout the year. They write argumentative and informative pieces, including blog posts, portfolio updates, and project reports, to communicate findings and support claims with evidence. Students engage in collaborative discussions, present research to peers, and develop vocabulary specific to agricultural science domains.
Students apply mathematical reasoning across units, including calculating feed amounts, fertilizer ratios, percent loss, square footage for chicken coops, costs of food using grocery ads, carrying capacity using graphs, acreage and supply calculations for agribusiness planning, and unit conversions in food science measurements.
Students conduct investigations and laboratory experiments aligned to life science, earth science, and engineering standards throughout the year. Topics include plant cell structure and function, photosynthesis and cellular respiration, genetics and heredity, ecosystem dynamics and food webs, water chemistry and macroinvertebrate biology, natural resource management, and engineering design applied to agricultural structures.
Career readiness, financial literacy, and 21st century life skills are embedded throughout the curriculum. Students explore careers in agriculture, food science, veterinary science, natural resource management, and agribusiness. They develop personal finance skills through grocery budgeting and agribusiness planning activities, and practice workplace readiness skills including teamwork, communication, and problem-solving across all units.
Formative Assessments
- Observations of seed dissection and plant cell model construction
- Journals recording transpiration experiment results
- Exit tickets on plant structure and function
- Discussions on pollinator importance and decline
- Group work analyzing plant growth under different light conditions
Summative Assessment
Projects including plant cell models, transpiration reports, and presentations on light experiments and plant growth factors
Benchmark Assessment
— not configured —
Alternative Assessment
Students may demonstrate understanding of plant structure and function through visual labeling of diagrams with word banks, oral responses to teacher questions about plant parts and their roles, or simplified experimental reports with sentence frames and graphic organizers. Hands-on activities such as seed dissection and plant observation may be conducted with manipulatives, modified tools, or direct teacher support as needed.
IEP (Individualized Education Program)
During hands-on investigations such as seed dissections, vascular dye observations, and cell model construction, provide step-by-step visual directions with diagrams so students can reference each stage of the process independently. For written outputs like transpiration journals and exit tickets, allow students to demonstrate understanding through labeled diagrams, oral explanations, or dictated responses rather than extended written prose. Pre-teach key vocabulary related to plant structure and function—such as vasculature, transpiration, and photosynthesis—using visual word banks or illustrated glossaries that remain accessible throughout the unit. Break multi-step experiments into clearly numbered, manageable tasks, and check in frequently during the early minutes of each activity to confirm understanding before students proceed.
Section 504
Ensure students have extended time to complete transpiration measurements, written journal entries, and any summative project components that require sustained focus or fine motor precision during dissections and model building. Preferential seating near the demonstration area supports access during teacher-led observations of plant cross-sections and microscope work, reducing distraction during critical instructional moments. Printed copies of any directions or diagrams displayed on the board should be provided directly to the student so attention can stay on the investigation rather than copying.
ELL / MLL
Provide a visual vocabulary reference featuring illustrated terms central to this unit—such as roots, stems, leaves, cells, photosynthesis, and transpiration—so students can connect new scientific language to labeled images throughout investigations. Use physical plant materials, dye experiments, and cell models as anchor experiences that make abstract biological concepts visible and tangible, reducing the language load required to access core content. Offer simplified written directions alongside the standard instructions, and allow students to record observations using labeled sketches or in their home language before transitioning to English scientific terminology.
At Risk (RTI)
Ground entry points in concrete, observable phenomena—such as the visible movement of colored water through a stem or the physical parts of a dissected seed—before introducing more abstract concepts like cellular respiration or the chemistry of photosynthesis. Offer graphic organizers or partially completed diagrams to help students organize their observations and connect plant parts to their functions without being overwhelmed by blank-page tasks. Connect unit content to familiar experiences, such as gardens, food plants, or outdoor spaces students may know, to activate prior knowledge and build motivation for deeper investigation.
Gifted & Talented
Invite students to investigate the relationships between plant systems at a deeper level—for example, by designing their own controlled variables within the transpiration or germination experiments and analyzing how multiple environmental factors interact rather than testing a single condition. Students can explore the biochemical details of photosynthesis and cellular respiration, including the role of specific pigments in light absorption, or research the ecological consequences of pollinator decline using scientific literature beyond the classroom. Encouraging students to propose their own inquiry questions related to soil chemistry, plant adaptation, or agricultural applications of plant biology allows for self-directed research that extends the unit's concepts into real-world agricultural and environmental contexts.