Grade 3 · Low-Tech Builds · Lesson 28

Dream Playground Model

Design a playful space where different children can move, imagine, and belong.

Time2–3 × 60 minutesTeamsTeams of 3–4EquipmentNo powered equipment required

Project inspiration · 3 images

See, build, and test

Use these images to understand the kind of making, details, and testing involved. They are inspiration—not designs students must copy.

Finished student example for Dream Playground Model
01Finished project
Close construction and materials view for Dream Playground Model
02Construction detail
Students testing and recording results for Dream Playground Model
03Student testing

Student directions · Grade 3

What will you make and do?

You will build a tabletop playground model with active play, imaginative play and a quiet area. Connected paths should help different model users reach these spaces.

Teacher overview: Students will plan the specific object described below, make and test a first version, then use their results to improve it. Read one step together, demonstrate the unfamiliar action, and let students complete that step before moving on.

  1. 1Plan your project

    Read the user scenarios with the teacher. Sketch two layouts and show how users with different movement or sensory needs could enter and travel.

  2. 2Make the first parts

    Mark paths and entrances on a cardboard base. Build rough recycled-material play features before attaching them permanently.

  3. 3Put it together

    Add the quiet area, gathering place and clear connections. Use the same scale figures to check openings and space around each feature.

  4. 4Test it fairly

    Move each model user from the entrance to the three play areas. Record blocked routes, confusing paths or places where the figure cannot reach.

  5. 5Improve one part

    Change one path, opening or feature location. Repeat the same routes with every figure.

  6. 6Show and turn in

    Tour your playground model. Submit its labeled map and route checklist; explain that it is a design model, not approved construction plans.

How will you know it works?

  • Includes active, imaginative, and quiet play
  • Paths connect the main areas
  • Color and form make the space feel welcoming

Before you move on

Tell a partner what you are making. Point to the part you will work on next. Draw or dictate your test notes if writing slows you down.

Machine cutting, printer setup and electrical power-on require adult approval. A basic-materials model is a valid way to demonstrate the design when equipment is unavailable.

Keep your plan, test notes and before-and-after evidence with the printable design brief below. Use the detailed teacher plan and any coding guide for tool instructions. These steps continue across the lesson’s meetings, not all in one sitting.

For teachers

Engineering standards

This shows how the lesson connects to the national NGSS engineering standards and what student work you can collect.

Assessed

3-5-ETS1-1

Teams define the user or purpose, success criteria, and limits before building.

What students show: Problem statement with measurable criteria and material constraints.
Practiced

3-5-ETS1-2

Students sketch and compare at least two solutions before choosing or combining features.

What students show: Two labeled ideas and an evidence-based design choice.
Assessed

3-5-ETS1-3

Teams use a repeatable low-tech test—move the same set of user figures through entrances, paths, and play zones—then revise one feature.

What students show: Test notes, before-and-after design, and explanation of improvement.

Materials

  • Cardboard, paper, foam, and modeling clay
  • Craft sticks, string, fabric, tubes, and clean lids
  • Small figures or paper people for scale testing
  • Rulers, pencils, markers, and planning paper
  • Masking tape, glue dots, paper fasteners, clips, and rubber bands
  • Scissors and other teacher-approved hand tools
  • Reused and student-proposed materials approved before use

Teacher preparation

  1. Set out a broad materials buffet instead of identical kits.
  2. Build one small test rig, not a finished example students may copy.
  3. Mark size, time, and material limits visibly.
  4. Prepare a team planning page and shared test-data table.
  5. Create a safe holding area for drying or unfinished builds.

Step by step

How to teach it

Day 1 · 0–20

Explore the challenge

  1. Introduce the mission: Create a model playground that offers at least three different ways to play and a clear way for everyone to enter.
  2. Identify the user or audience and what success should look like.
  3. Explore how sample materials bend, fold, join, compress, slide, or balance.
Day 1 · 20–60

Imagine and prototype

  1. Each student sketches a different possibility.
  2. Teams compare ideas against criteria and constraints.
  3. Build a quick model using only part of the material budget.
Day 2 · 0–35

Build and test

  1. Complete the first working version.
  2. Use the same procedure each time: move the same set of user figures through entrances, paths, and play zones.
  3. Record what worked, what failed, and where it happened.
Day 2 · 35–60

Improve with evidence

  1. Change one important feature rather than rebuilding randomly.
  2. Repeat the same test and compare results.
  3. Add color, surface, form, or story details that strengthen the purpose.
Optional Day 3

Gallery and challenge round

  1. Display designs with a one-sentence mission and test result.
  2. Let visitors try the project using the same rules.
  3. Teams explain one tradeoff and one idea they would try next.

Assessment

  • Problem statement includes a purpose, criteria, and constraints.
  • Sketches show meaningfully different ideas.
  • Material choices are explained using properties.
  • Test is repeatable and produces recorded evidence.
  • Revision responds to a specific result or failure point.

Supports & extensions

  • Offer picture directions and sample joining techniques.
  • Provide pre-cut pieces, adaptive scissors, or larger materials.
  • Allow students to explain through drawing, speaking, or demonstration.
  • Assign flexible roles: designer, builder, tester, recorder, and artist.
  • Extension: reduce material use while maintaining performance.

Safety & responsible use

  • Use only clean, teacher-approved reused materials.
  • Carry scissors and tools safely; cut away from hands and bodies.
  • Cover sharp cardboard corners, wire ends, skewers, or fasteners.
  • Use a defined test zone and keep faces away from moving or falling parts.
  • Teacher handles hot glue, craft knives, and any tool not approved for students.

No-machine alternative

The entire project is already designed for common classroom materials. Substitute paper folds, tabs, slots, string, tape, or found objects while keeping the same criteria and fair-test cycle.

Printable student design brief

The challenge

Create a model playground that offers at least three different ways to play and a clear way for everyone to enter.

Success criteria

  • Includes active, imaginative, and quiet play
  • Paths connect the main areas
  • Color and form make the space feel welcoming

Constraints

  • Fits the assigned base
  • Uses figures to check scale
  • No single feature may block the main path

Engineer’s notes

Our design should…
We chose this material because…
Our first test showed…
The failure point was…
We changed… because…
Next time we would…
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