SCIENCE · GRADES 3-5 · 35-40 MIN
Ecosystem Floor: Food Webs Across Room Habitats lesson plan
Students place species in habitat rooms, connect a yarn food web, trace energy from the sun, and model what happens when one species is removed.
At a glance
Time: 35-40 min
Grades: Grades 3-5
Subject: Science: Food Webs Across Room Habitats
Grouping: Whole class.
Space: Several rooms or areas.
Teacher prep: 10 min printing + 15 min taping
Included: Teacher guide, student sheet, checks for understanding, exit ticket with answers
Open the printable lesson: teacher guide and student sheet →
Essential question
What happens to the whole house when the pond's frogs disappear?
What students learn and show
Learn: Food webs show feeding relationships; removing one species affects others.
Show: Trace one path through the web and predict two effects of removing a species.
Objectives
Place species in habitat rooms and justify it
Build a yarn food web across rooms
Trace one energy path from sun to apex on foot
Predict and demonstrate a removal cascade
Before this lesson students should: Producer, consumer, predator, prey.
Materials and prep
The 1:1 print or labeled rooms
Species cards (example list in the packet)
Yarn
Habitat labels
Prep (about 10 min to print, 15 min to tape)
Make species cards (e.g., grass, clover, grasshopper, rabbit, frog, snake, hawk, mushroom). Use a list with more producers than predators.
Label rooms as habitats.
Yarn.
Space: Several rooms or areas.
Grouping: Whole class.
Ways to run it: Painter's tape on the floor; 1:1 printed floor plan; real
Lesson procedure
Teacher model: 'Sun to grass to grasshopper to frog to hawk. The arrow points to who gets the energy.'
Guided practice: The class connects the first chain together before adding links.
Species move into sensible habitats and defend the choice.
Yarn runs sun-to-producer then eaten-to-eater, each end held; the web crosses rooms.
One student walks a full path naming each transfer.
Frogs exit; holders feel the slack — walk one consequence each (who starves, who overgrows).
Introduce a species to patch the web — one card, or has the shape changed?
Checks for understanding
Ask: Where do most food chains get their energy? Look for: The sun, captured by producers.
Ask: Frogs disappear. Name a loser and an overgrower. Look for: Snakes or hawks lose food; grasshoppers may increase.
Ask: Why did removing one card slacken several strands? Look for: That species connected to several others.
Exit ticket
Draw one food chain from the web with arrows. Answer: Correct arrow direction from food to eater.
If the rabbits disappear, predict two effects. Answer: Predators lose food; plants may increase.
Scoring: Item 1: 2 points. Item 2: 2 points.
Common misconception
Students may think: Arrows point from eater to food.
Address it: Arrows show where energy goes: from food to eater.
Supports and extensions
Learning support: Fixed picture card; holding one strand and reporting its ends is a complete role.
Multilingual learners: The web is visible string, not vocabulary; roles taped to cards.
Mobility and access: The web can be built with string on a tabletop board; tracing and predicting stay the goal.
Extension: Add a decomposer room — where does the web send its dead, and what breaks if that room closes?
Transfer task: Build a food web for a pond.
Spaced review: Next unit: identify decomposers in a new web.
Standards connections
CCSS SL.4.1 (standard)
NGSS 5-LS2-1 (standard)
Connections show which skills the activity practices. They are not a claim of full coverage; see the library for scope notes.
Why this approach
A National Academies consensus report arguing that spatial thinking is a teachable, underrecognized skill that belongs across the K-12 curriculum. Limit: A policy and synthesis report, not an experiment. It does not test this lesson.
Ready to teach it?
The printable version has the full teacher guide, a student recording sheet, prep steps and an exit ticket. Open the printable lesson →
Need the floor plan itself? Get a 1:1 print quote.
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