Science Lesson Kit · Teacher Resource
Plant & Animal Structures: Form Fits Function — 5E Lesson Plan
Life Science · 50 minutes
Grade 4
5E lesson flow
01
Engage
6 min
Teacher Does
Show an unfamiliar structure and one observation about what the organism does. Ask students for a tentative structure-function claim.
Students Do
Observe details, make a claim, and name the evidence they used.
Ask
- What do you observe?
- Which observation supports your function idea?
Look For
Claims tied to evidence rather than appearance alone.
02
Explore
13 min
Teacher Does
Provide plant and animal structure-function evidence stations.
Students Do
Match structures with supported functions, mark evidence, and note whether each structure is internal or external.
Ask
- Which clue makes this match stronger?
- What would make you revise your idea?
Look For
Evidence-based matching and willingness to revise.
03
Explain
9 min
Teacher Does
Model the reasoning chain: structure → evidence about performance → function → survival/growth/behavior/reproduction outcome.
Students Do
Revise one station explanation using the full chain.
Ask
- What is the structure?
- What does the evidence show it does?
- Why does that matter?
Look For
Complete causal reasoning rather than vocabulary-only answers.
04
Elaborate
14 min
Teacher Does
Give a new organism case with several interacting structures.
Students Do
Build a system model showing how two or more structures contribute different functions to a larger organism outcome.
Ask
- How are the functions different?
- How do they contribute to the same larger job?
Look For
System-level reasoning without claiming all parts do the same thing.
05
Evaluate
8 min
Teacher Does
Present a weak and strong structure-function argument.
Students Do
Choose the stronger argument and justify the choice with evidence.
Ask
- Which sentence actually uses evidence?
- Does the claim go beyond what the evidence can support?
Look For
Specific evidence and appropriately limited claims.
Student goal
I can use evidence to explain how internal and external structures support important organism functions.
Learning objectives
- I can explain how a plant or animal structure supports a specific function.
- I can use evidence to connect structure → function → organism outcome.
- I can explain how several structures can work together as parts of a system.
Materials
- Plant and animal structure diagrams
- Structure-function evidence cards
- Chart paper
- Sticky notes
- Science notebooks
Before class
- Choose macroscopic structures only: organs and body parts, not cells or molecular mechanisms.
- Prepare at least one plant and one animal evidence set.
- Pair structure observations with behavior, performance, or diagram evidence; do not ask students to infer function from shape alone.
- Prepare one example where several structures contribute to a larger system function.
- Open Teach This Lesson and Practice before class.
Prior knowledge
- Students can identify common plant and animal body parts.
- Students can distinguish an observation from an opinion.
Vocabulary
- structure
- A body part or feature of a living thing.
- function
- The job a structure does.
- internal
- Located inside an organism.
- external
- Located on the outside of an organism.
- system
- Parts that work together to do a larger job.
- organism
- An individual living thing.
Differentiation
- Use color-coded cards for STRUCTURE, EVIDENCE, FUNCTION, and OUTCOME.
- Provide the frame: The ___ helps ___ because the evidence shows ___.
- Allow oral rehearsal before written explanation.
- Use labeled diagrams for internal structures when students cannot observe them directly.
- For extension, ask whether one structure can support more than one function and require evidence for both.
Assessment
- Check internal/external classification as a supporting skill.
- Check structure-function causal links.
- Check whether arguments cite specific evidence.
- Check whether system models show different structures contributing different functions.
Exit ticket
Choose one structure and write structure → evidence → function → outcome in one short explanation.
Extension
Compare two organisms that perform a similar function using different structures and explain how the evidence supports both examples.