CTE & TRADES · GRADES 6-8, GRADES 9-12 · 35-45 MIN
The Work Triangle: Home Ec / FCS & Kitchen Efficiency lesson plan
Students measure the sink-stove-fridge triangle, walk a recipe workflow counting steps, and redesign to save steps.
At a glance
Time: 35-45 min
Grades: Grades 6-8, Grades 9-12
Subject: CTE & trades: Home Ec / FCS & Kitchen Efficiency
Grouping: Teams of 3.
Space: One kitchen.
Teacher prep: 10 min printing + 25 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
How many steps does dinner cost in this kitchen?
What students learn and show
Learn: Kitchen layouts can be compared by measured distances and workflow; the work triangle is a design guideline, not a code.
Show: Report triangle legs and before/after step counts and justify one change.
Objectives
Measure the sink-stove-refrigerator triangle on the printed kitchen
Walk a complete recipe workflow and record the step count per task
Identify the workflow's most expensive movement pattern with data
Redesign the kitchen (move one or two stations) and prove the improvement by re-walking
Before this lesson students should: Addition; measuring.
Materials and prep
The 1:1 print with a kitchen
Tape measures
Recipe workflow cards (a simple 8-10 step recipe broken into stations)
Step-tally sheets
Painter's tape for the redesign round
Prep (about 10 min to print, 25 min to tape)
Lay out a kitchen print or tape a kitchen with sink, stove and fridge marked.
Write a recipe workflow card (8-10 station visits).
Measure the triangle yourself once.
Space: One kitchen.
Grouping: Teams of 3.
Ways to run it: Painter's tape on the floor; 1:1 printed floor plan
Lesson procedure
Teacher model: Measure legs: 'Sink to stove 9 ft, stove to fridge 7 ft, fridge to sink 10 ft: 26 ft total. A common guideline is each leg 4-9 ft and the total no more than 26 ft, so this leg of 10 is long.'
Guided practice: One team walks the recipe while all tally; compare counts.
Measure the triangle: teams measure sink-to-stove, stove-to-fridge, and fridge-to-sink, then total the three legs. Kitchen designers watch this number — a compact triangle saves steps on every single meal.
Cook the recipe on foot: one teammate walks the full workflow card at a calm pace while partners tally steps per task. No shortcuts — the recipe's order rules.
Find the expensive move: which single task cost the most steps? How many of those steps came from the triangle's longest leg?
Redesign: teams may relocate one or two stations with tape (the fridge is easiest to move in real life, the sink hardest — plumbing). Re-measure the triangle.
Re-walk and prove it: same recipe, same tally. Compute steps saved per meal, then multiply: three meals a day, 365 days — what did your redesign save a family in a year?
Debrief: this is the exact analysis kitchen designers and FCS professionals run. Which real kitchen in your life fails the walk test?
Checks for understanding
Ask: Legs of 9, 7 and 10 ft. Total? Look for: 26 feet.
Ask: 84 steps before, 61 after. Steps saved per meal? Look for: 23.
Ask: Why is the sink the hardest station to move? Look for: It is tied to supply and drain plumbing in the floor and walls.
Exit ticket
Legs 6, 8 and 11 ft. Total? Which leg is outside the 4-9 ft guideline? Answer: 25 ft; the 11-ft leg.
Saving 20 steps per meal, 2 meals a day, how many steps a year? Answer: 14,600.
Scoring: Item 1: 2 points. Item 2: 1 point.
Common misconception
Students may think: The work triangle is a building code.
Address it: It is a design guideline (NKBA); codes govern things like clearances and safety.
Supports and extensions
Learning support: The walker role follows numbered station cards one at a time; tally-keeping with a clicker is a strong structured role.
Multilingual learners: Workflow cards use pictures of each station; step counts and the triangle's three numbers carry the analysis.
Mobility and access: Workflows can be rolled or traced with a token on a tabletop plan; measurement and comparison stay the goal.
Extension: Run the same analysis for two cooks working at once — where do they collide, and which redesign fixes the collision without growing the triangle?
Transfer task: Measure the triangle in a kitchen at home or school.
Spaced review: Next unit: compare two kitchen sketches by triangle total.
Standards connections
CCSS 6.RP (domain-level practice)
Connections show which skills the activity practices. They are not a claim of full coverage; see the library for scope notes.
Why this approach
In a navigation experiment, adults who physically walked a room-sized virtual space searched it almost perfectly (about 90% of trials), while people using a desktop display or only turning managed under half that rate. Limit: An adult virtual-reality study of search efficiency, not a classroom or design-learning study.
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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