Grade 3 · Design & Engineering · Lesson 152

Book Stand

Build a folding cardboard stand that holds a thin classroom book open at a comfortable angle.

Time2 × 45 minutesTeamsPairs; alternate builder and testerEquipmentBasic classroom design materials; no powered equipment

Your project in view

What you are making

Build a folding cardboard stand that holds a thin classroom book open at a comfortable angle.

This generated example illustrates one possible finished design—not actual student work. Use the lesson’s sizes, connected parts and safety steps; your colors and creative details can be different.

Generated finished-project example for Book Stand: Build a folding cardboard stand that holds a thin classroom book open at a comfortable angle.
Book Stand · Generated project example

Student directions · Grade 3

What will you make and do?

Build a folding cardboard stand that holds a thin classroom book open at a comfortable angle.

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

    Measure the closed book and draw a side view with base, back support and page ledge.

  2. 2Make the first parts

    Fold a triangular support and attach a low ledge wide enough for the book.

  3. 3Put it together

    Place the book on the stand and check that pages, title area and turning space remain usable.

  4. 4Test it fairly

    Turn five pages and leave the book open for 30 seconds in three trials. Record slips or collapse.

  5. 5Improve one part

    Change one ledge height, back angle or base width and repeat.

  6. 6Show and turn in

    Submit the finished book stand, two labeled ideas and before-and-after evidence. Explain which change the results support.

How will you know it works?

  • Holds the open book for 30 seconds
  • Allows five pages to be turned without collapse
  • Record the stated test and explain one revision

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

Define the need in Build a folding cardboard stand that holds a thin classroom book open at a comfortable angle. Agree on the two success checks and the listed material limits.

What students show: Two labeled ideas with the target and limits stated.
Practiced

3-5-ETS1-2

Compare the ideas using the project checks: Holds the open book for 30 seconds; Allows five pages to be turned without collapse.

What students show: A selected design with a reason connected to a success check.
Assessed

3-5-ETS1-3

Test, change one feature and retest: Turn five pages and leave the book open for 30 seconds in three trials. Record slips or collapse. Change one ledge height, back angle or base width and repeat.

What students show: Before-and-after results collected under the same conditions.

Materials

  • Cardboard
  • tape
  • ruler
  • thin practice book
  • page clips
  • Pencil, planning paper and the printable design brief below

Teacher preparation

  1. Gather per-pair materials: Cardboard; tape; ruler; thin practice book; page clips.
  2. Make one rough sample and rehearse the exact test: Turn five pages and leave the book open for 30 seconds in three trials. Record slips or collapse.
  3. Set the size, load or distance marks mentioned in the steps before class. Demonstrate an ordinary first attempt, not a perfect model to copy.
  4. Prepare any holes, fasteners or difficult cuts for students. Check the stated safety note and clear the testing space.

Step by step

How to teach it

Meeting 1 · 0–8 min

See the job and plan

  1. Introduce the finished object: Build a folding cardboard stand that holds a thin classroom book open at a comfortable angle.
  2. Measure the closed book and draw a side view with base, back support and page ledge.
  3. Students say what would count as a successful result.
Meeting 1 · 8–18 min

Model the unfamiliar action

  1. Demonstrate slowly: Fold a triangular support and attach a low ledge wide enough for the book.
  2. Pause so partners can repeat the action; provide prepared parts if cutting or folding blocks progress.
Meeting 1 · 18–35 min

Build the first version

  1. Place the book on the stand and check that pages, title area and turning space remain usable.
  2. Partners swap builder and checker roles halfway through. Check the working part before decorating.
Meeting 1 · 35–45 min

Try once and save

  1. Run one trial of the stated test to locate an obvious problem. Do not count a changed procedure as a fair comparison.
  2. Label and store the model; sketch its current shape and clear the work area.
Meeting 2 · 0–8 min

Predict and set up

  1. Revisit the two success checks. Agree on identical starting conditions and prepare a before/after results table.
Meeting 2 · 8–23 min

Collect evidence

  1. Turn five pages and leave the book open for 30 seconds in three trials. Record slips or collapse.
  2. One student operates while the other records. Swap for a later trial while noting a change of operator if it affects the result.
Meeting 2 · 23–35 min

Change one thing

  1. Change one ledge height, back angle or base width and repeat.
  2. Keep the original results rather than replacing them with only the best attempt.
Meeting 2 · 35–45 min

Explain and clean up

  1. Submit the finished book stand, two labeled ideas and before-and-after evidence. Explain which change the results support.
  2. Collect the brief and results; separate reusable materials and clean the test area.

Assessment

  • Holds the open book for 30 seconds
  • Allows five pages to be turned without collapse
  • Student demonstrates the actual task: Turn five pages and leave the book open for 30 seconds in three trials. Record slips or collapse.
  • Record includes failures as well as successes.
  • Student identifies one changed feature and uses the retest to explain the result.

Supports & extensions

  • Provide fold marks or pre-cut parts; accept drawings or dictated observations.
  • Start with the smallest working version of book stand before decoration.
  • Extension after success: choose one more value for the same tested feature, predict its effect and repeat turn five pages and leave the book open for 30 seconds in three trials.

Safety & responsible use

  • Teacher checks materials and test conditions before use. Use classroom scissors; adults prepare difficult cuts, holes and fasteners.
  • No powered tools, coding, hot glue or electrical circuits are required. Keep moving objects contained and test loads light.
  • Keep pieces on the tabletop, do not mouth materials and stop if a part tears into a sharp or loose hazard.

No-machine alternative

Use prepared paper parts, larger pieces or an adult-assisted version of the same build. Keep the functional task: Build a folding cardboard stand that holds a thin classroom book open at a comfortable angle. If physical testing is not possible, label sketches as predictions rather than measured results.

Printable student design brief

The challenge

Build a folding cardboard stand that holds a thin classroom book open at a comfortable angle.

Success criteria

  • Holds the open book for 30 seconds
  • Allows five pages to be turned without collapse
  • Record the stated test and explain one revision

Constraints

  • Use only the listed teacher-approved materials
  • Stay within the teacher-set size, load and test-space limits
  • Two 45-minute meetings; keep the first version simple

Engineer’s notes

Who uses this object, and what should it do?
Draw two possible designs. Label the working parts and circle your choice.
Which size, fold, gap or position must you measure or mark?
Before testing, predict what will happen: Turn five pages and leave the book open for 30 seconds in three trials. Record slips or collapse.
Record each trial: condition / expected result / actual result.
Draw the ONE change you made. What stayed the same?
Record the retest. Did the change help, not help, or leave the result uncertain?
Show and explain: one result that supports your conclusion.
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