Grade 5 · Tinkercad · Lesson 55

Modular Organizer Connectors

Create a reusable printed joint system for student-designed containers and dividers.

Time2–3 × 60 minutes + adult printingTeamsTeams of 2–3EquipmentTinkercad + Bambu P1S fleet

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 Modular Organizer Connectors
01Finished project
Close construction and materials view for Modular Organizer Connectors
02Construction detail
Students testing and recording results for Modular Organizer Connectors
03Student testing

Student quick guide

What are we doing?

1

Meet the challenge: Design a family of printed connectors that lets users turn flat classroom materials into a sturdy, rearrangeable organizer.

2

Measure, sketch two ideas, and make a quick cardboard or clay model.

3

Build the best idea in Tinkercad, test the print, and improve one feature.

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 and set measurable size, performance, material, and print-time limits before modeling.

What students show: Problem statement, criteria, constraints, measurements, and labeled sketch.
Practiced

3-5-ETS1-2

Students sketch and compare at least two possible forms before choosing or combining features for the digital model.

What students show: Two ideas and a criteria-based design choice.
Assessed

3-5-ETS1-3

Teams use a repeatable test—assemble the same organizer, load it with classroom tools, move it one meter, rearrange it, and repeat—identify a failure point, revise one dimension or feature, and retest.

What students show: Test data, version comparison, and evidence-based explanation.

Materials

  • Corrugated cardboard and recycled plastic-sheet samples
  • Calipers
  • Classroom tools and load-test tray
  • Rulers or calipers
  • Graph paper, pencils, cardboard, clay, and tape for prototypes
  • Computer or tablet with educator-managed Tinkercad access
  • PLA filament; teacher sets a project-specific gram and print-time budget
  • Finished test objects appropriate to the lesson

Teacher preparation

  1. Create an educator-managed Tinkercad class and assignment link; students do not enter personal information.
  2. Prepare one navigation demonstration using drag, zoom, orbit, undo, and view cube.
  3. Set the build envelope, minimum wall thickness, minimum feature size, and maximum print time for the class.
  4. Create the file rule G5_55_Team##_v1.
  5. Prepare shared build plates and an adult review queue for dimensions, orientation, stability, material use, and safe slicing.

Step by step

How to teach it

Day 1 · 0–20

Define and measure

  1. Introduce the mission: Design a family of printed connectors that lets users turn flat classroom materials into a sturdy, rearrangeable organizer.
  2. Identify the user, criteria, constraints, and measurements that matter.
  3. Sketch two different solutions at approximately full size.
Day 1 · 20–60

Prototype and compare

  1. Build quick cardboard or clay versions.
  2. Compare both ideas against the shared criteria.
  3. Select or combine features and predict the likely failure point.
Day 2 · 0–15

Tinkercad skill warm-up

  1. Measure several cardboard samples and choose a documented design thickness.
  2. Model one slot, duplicate it, and align slots into corner or edge connectors.
  3. Print a small tolerance comb before the full connector family.
Day 2 · 15–60

Build the digital model

  1. Place the ruler and enter important dimensions instead of guessing.
  2. Use align and group to create clean, intentional geometry.
  3. Inspect from top, front, side, and underneath; name the file correctly and submit for teacher review.
Day 3

Print, test, and improve

  1. An adult slices, approves, operates printers, and removes parts.
  2. Use the same test procedure each time: assemble the same organizer, load it with classroom tools, move it one meter, rearrange it, and repeat.
  3. Revise one dimension or feature in a new Tinkercad version and explain the expected improvement.

Assessment

  • Problem includes a user or purpose plus measurable criteria and constraints.
  • Two sketches show meaningfully different solutions.
  • Tinkercad model uses entered dimensions and purposeful tool choices.
  • Model meets the teacher's printability and material-budget checklist.
  • Test is repeatable and the revision responds to evidence.

Supports & extensions

  • Provide a Tinkercad picture guide and a starter file containing only basic reference shapes.
  • Use mouse practice, larger grid snap, and one new tool at a time.
  • Allow a student to direct a partner or teacher who performs fine cursor movements.
  • Offer measured template objects while preserving choices about form and features.
  • Extension: reduce material, add a moving fit, or create two size variants using parameters recorded on paper.

Safety & responsible use

  • Students do not touch hot ends, heated beds, or moving printer parts.
  • An adult handles slicing approval, printer setup, monitoring, part removal, and support cleanup.
  • Use only lab-approved PLA and teacher-managed accounts; never publish student names or designs publicly without permission.
  • Check finished parts for sharp strings, weak points, and small-piece hazards before use.
  • Printed parts are prototypes—not food-safe, medical, climbing, load-bearing, or life-safety products.

No-machine alternative

Build the final version with cardboard, clay, foam, paper tubes, reusable construction pieces, or teacher-prepared shapes. Keep the same measurements, criteria, fair test, evidence, and revision cycle.

Printable student design brief

The challenge

Design a family of printed connectors that lets users turn flat classroom materials into a sturdy, rearrangeable organizer.

Success criteria

  • Connectors fit without damaging panels
  • Loaded organizer remains stable
  • System can be rearranged and reused

Constraints

  • Works with teacher-approved flat materials
  • Includes at least two compatible connector types
  • Uses the tolerance test before full printing

Engineer’s notes

Our user needs…
The measurements that matter are…
Idea A and Idea B are different because…
In Tinkercad we used…
Our test showed…
We changed… because…
Our next version would…
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